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<div class="container">
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<section><div class="articles"><h1>2016</h1><div id="carregarAr0">FACCIPIERI, JORGE H.; COIMBRA, TIAGO A. ; GELIUS, LEIV-J. ; TYGEL, MARTIN . Stacking apertures and estimation strategies for reflection and diffraction enhancement. GEOPHYSICS, v. 81, p. V271-V282, 2016.<br><br>
COIMBRA, TIAGO A. ; FACCIPIERI, JORGE H. ; RUEDA, DANY S. ; TYGEL, MARTIN . Common-reflection-point time migration. Studia Geophysica et Geodaetica, v. 60, p. 1-31, 2016.<br><br></div></div><div class="articles"><h1>2015</h1><div id="carregarAr1">GELIUS, LEIV-J. ; TYGEL, MARTIN . Migration-velocity building in time and depth from 3D (2D) Common-Reflection-Surface (CRS) stacking - theoretical framework. Studia Geophysica et Geodaetica (Praha), v. 59, p. 253-282, 2015.
<br><br>BORIN, EDSON; DEVLOO, PHILIPPE R.B. ; VIEIRA, GILVAN S. ; SHAUER, NATHAN . Accelerating engineering software on modern multi-core processors. Advances in Engineering Software (1992), v. online, p. online, 2015.
<br><br>BALDASSIN, Alexandro ; BORIN, E. ; ARAUJO, Guido . Performance implications of dynamic memory allocators on transactional memory systems. SIGPLAN Notices (Cessou em 1991. Cont. ISSN 1523-2867 ACM SIGPLAN Notices), v. 50, p. 87-96, 2015.<br><br>
SANTOS, HENRIQUE B. ; Coimbra, Tiago A. ; Schleicher, Jörg ; Novais, Amélia . Prestack time-migration velocity analysis using remigration trajectories. Geophysics, v. 80, p. S151-S163, 2015.<br><br></div></div><div class="articles"><h1>2014</h1><div id="carregarAr2">DELL, SERGIUS ; GAJEWSKI, DIRK ; TYGEL, MARTIN . Image-ray Tomography. Geophysical Prospecting (Print), v. 62, p. n/a-n/a, 2014.<br><br>
PERROUD, H. ; KRUMMENAUER, R. ; M. Tygel ; Lopes, R.R. . Parameter estimation from non-hyperbolic reflection traveltimes for large aperture common midpoint gathers. Near Surface Geophysics (Online), v. 12, p. 679-686, 2014.<br><br>
BARROS, TIAGO ; LOPES, RENATO ; TYGEL, MARTIN . Implementation aspects of eigendecomposition-based high-resolution velocity spectra. Geophysical Prospecting (Print), v. 63, p. n/a-n/a, 2014.
<br><br>PILA, MATHEUS F. ; Schleicher, Jörg ; Novais, Amélia ; Coimbra, Tiago A. . True-amplitude single-stack redatuming. Journal of Applied Geophysics, v. 105, p. 95-111, 2014.<br><br>
BERTAZI, G. K. ; AULER, R. ; BORIN, E. . Uma plataforma para o ensino de organização de computadores e linguagem de montagem. International Journal of Computer Architecture Education, v. 3, p. 13-16, 2014.<br><br></div></div><div class="articles"><h1>2013</h1><div id="carregarAr3">Asgedom, E.A. ; TYGEL, M. ; Gelius, L.J. . 2D common-offset traveltime based diffraction enhancement and imaging. Geophysical Prospecting (Print), v. 61, p. 1178-1193, 2013.<br><br>
Faccipieri, J.H. ; TYGEL, M. ; Rueda, D. ; Gelius, L.J. . Recovering diffractions in CRS stacked sections. First Break, p. 65-69, 2013.<br><br>
GELIUS, LEIV-J. ; TYGEL, MARTIN ; TAKAHATA, ANDRÉ K. ; ASGEDOM, ENDRIAS G. ; SERRANO, DANY R. . High-resolution imaging of diffractions - A window-steered MUSIC approach. Geophysics, v. 78, p. S255-S264, 2013.<br><br>
MIQUELES, EDUARDO ; FIGUEIREDO, J J S DE ; Coimbra, Tiago A . A Computer Library for Ray Tracing in Analytical Media. Journal of Physics. Conference Series (Online), v. 410, p. 012005, 2013.<br><br>
Coimbra, Tiago A. ; DE FIGUEIREDO, J. JADSOM S. ; Schleicher, Jörg ; Novais, Amélia ; COSTA, JESSÉ C. . Migration velocity analysis using residual diffraction moveout in the poststack depth domain. Geophysics, v. 78, p. S125-S135, 2013.<br><br>
MIQUELES, EDUARDO X. ; Coimbra, Tiago A. ; AMARO, BRUNO D. ; DE FIGUEIREDO, J.J.S. . Analytical ray tracing system: Introducing art, a C-library designed for seismic applications. Computer Physics Communications, v. 185, p. 274-293, 2013.
<br><br>GUEDES, MARCELO ; AULER, RAFAEL ; DUENHA, LIANA ; BORIN, EDSON ; AZEVEDO, RODOLFO . An automatic energy consumption characterization of processors using ArchC. Journal of Systems Architecture, v. 59, p. 1-12, 2013.
<br><br>BORIN, E.; AULER, R. . Uma abordagem para o ensino de linguagem de montagem, arquitetura e organização de computadores. International Journal of Computer Architecture Education, v. 2, p. 21, 2013.<br><br></div></div><div class="articles"><h1>2012</h1><div id="carregarAr4">BORIN, E.; ARAUJO, G. ; BRETERNITZ JR., M ; WU, Y. . Microcode Compression using Structured-constrained Clustering. International Journal of Parallel Programming, v. August, p. 1573-7640, 2012.
<br><br>TYGEL, M.; URSIN, B. ; IVERSEN, E. ; Hoop, M.V. . Estimation of geological dip and curvature from time-migrated zero-offset seismic reflections in heterogeneous anisotropic media. Geophysical Prospecting (Print), v. 60, p. 201-216, 2012.
<br><br>TAKAHATA, A. K. ; Nadalin, E.Z. ; FERRARI, R. ; Duarte, L.T. ; Lopes, R. ; SUYAMA, R. ; ROMANO, J. M. ; TYGEL, M. . Unsupervised Processing of Geophysical Signals: A Review of Some Key Aspects of Blind Deconvolution and Blind Source Separation.. IEEE Signal Processing Magazine (Print), v. 29, p. 27-35, 2012.
<br><br>ASGEDOM, E. G. ; Gelius, L.J. ; TYGEL, M. . Seismic Coherency Measures in Case of Interfering Events: A Focus on the Most Promising Candidates of Higher-Resolution Algorithms. IEEE Signal Processing Magazine (Print), v. 29, p. 47-56, 2012.
<br><br>Iversen, E. ; TYGEL, M. ; URSIN, B. ; Hoop, M.V. . Kinematic time migration and demigration of reflections in pre-stack seismic data. Geophysical Journal International (Print), v. 189, p. 1635-1666, 2012.<br><br>
Coimbra, T. A. A.; NOVAIS, A. ; SCHLEICHER, J. . Offset continuation (OCO) ray tracing using OCO trajectories. Studia Geophysica et Geodaetica (Praha), v. 56, p. 1-12, 2012.<br><br></div></div><div class="articles"><h1>2011</h1><div id="carregarAr5">Lima, E. ; Santos, L. T. ; SCHLEICHER, J. ; TYGEL, M. . A comparison of semblances of different order in common-reflection-surface parameter estimation. Journal of Geophysics and Engineering (Print), v. 8, p. 175-184, 2011.
<br><br>ASGEDOM, E. G. ; Gelius, L.J. ; Austeng, A. ; Holm, S. ; TYGEL, M. . Time-reversal multiple signal classification in case of noise: A phase-coherent approach. The Journal of the Acoustical Society of America, v. 130, p. 2024-2034, 2011.
<br><br>TYGEL, M.; N. Bleistein ; ZHANG, Y. ; Fomel, S. . Seismic Imaging. International Journal of Geophysics, v. 2011, p. 10-20, 2011.
<br><br>ASGEDOM, E. G. ; Gelius, L.J. ; TYGEL, M. . Higher- resolution determination of zero-offset common-reflection surface (CRS) stack parameters. International Journal of Geophysics, v. 2011, p. 30-40, 2011.<br><br></div></div><div class="articles"><h1>2010</h1><div id="carregarAr6">PERROUD, H. ; TYGEL, M. ; FREITAS, L. B. DE . Inverse Common-Reflection-Surface. Geophysical Journal International (Print), v. 183, p. 1392-1400, 2010.<br><br>
GUEVARA, S. ; AGUDELO, W. ; Rueda, D. ; GARCIA, N. ; BECERRA, C. ; FIGUEREDO, Y. ; PLATA, A. . Seismic and Lithological Near Surface Characteristics of an Area in North-East Colombia. Revista CT&F Ciencia, Tecnología y Futuro, v. 4, p. 7-21, 2010.<br><br></div></div><div class="articles"><h1>2009</h1><div id="carregarAr7">URSIN, B. ; TYGEL, M. ; IVERSEN, E. . SS-traveltime parameters from PP and PS reflections. Geophysics, v. 74, p. R35-R47, 2009.
<br><br>FARIAS, Armando Lopes ; FREITAS, L. B. DE ; TYGEL, M. . Detecção de camadas delgadas usando sísmica de reflexão. Revista Brasileira de Geociências, v. 38, p. 159-171, 2009.
<br><br>TYGEL, M.; SHLEICHER, J. ; COSTA, J. C. ; NOVAIS, A. . On the estimation of local slopes. Geophysics, v. 74, p. P25-P33, 2009.<br><br></div></div><div class="articles"><h1>2008</h1><div id="carregarAr8">IVERSEN, E. ; TYGEL, M. . Image-ray tracing for joint 3D seismic velocity estimation and time-to-depth conversion. Geophysics, v. 73, p. S99-S114, 2008.<br><br></div></div><div class="articles"><h1>2007</h1><div id="carregarAr9">TYGEL, M.; SANTOS, Lucio T . Quadratic Normal Moveouts of Symmetric Reflections in Elastic Media: A Quick Tutorial. Studia Geophysica et Geodaetica (Praha), Czech Republic (Aceito), v. 51, p. 185-206, 2007.
<br><br>URSIN, B. ; TYGEL, M. . Zero-offset seismic amplitude decomposition and migration. Geophysics, v. 72, p. 187-193, 2007.
<br><br>TYGEL, M.; URSIN, B. ; STOVAS, A. . Convergence of traveltime power series for a layered VTI medium. Geophysics, v. 72, p. 21-28, 2007.<br><br></div></div><div class="articles"><h1>2006</h1><div id="carregarAr10">SANTOS, Lucio T ; TYGEL, M. . Inverting Amplitude versus Ray Parameter Curves Using the Reflection Impedance Concept.. Russian Geology and Geophysics, Siberia, v. 47, n.5, p. 579-585, 2006.
TYGEL, M.; URSIN, B. . On "Divergent and asymptotic nature of the time-offset Taner-Koehler series in reflection seismics" (Santi Kumar Ghosh and Prakash Kumar, 2002, GEOPHYSICS, 67, 1913?1919). Geophysics, v. 71, p. 13-14, 2006.<br><br></div></div><div class="articles"><h1>2005</h1><div id="carregarAr11">BORIN, E.; WANG, C. ; WU, Y. ; ARAUJO, G. . Dynamic binary control-flow errors detection. ACM SIGARCH Computer Architecture News, v. 33, p. 15-20, 2005.
<br><br>MOREANO, N. ; BORIN, E. ; CID DE SOUZA, NULL ; SOUZA, Cid Carvalho de ; ARAUJO, G. . Efficient datapath merging for partially reconfigurable architectures. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, v. 24, p. 969-980, 2005.
<br><br>J.C. Costa ; NOVAIS, A. ; SILVA NETO, F.A. ; TYGEL, M. . 2.5D Acoustic Finite-Difference Modeling in variable density media. Journal of Seismic Exploration, Holanda, v. 13, p. 323-335, 2005.
<br><br>PERROUD, H. ; TYGEL, M. . Velocity estimation by the common-reflection-surface (CRS) method: Using ground-penetrating radar data. Geophysics, Alemanha, v. 70 (6), p. B43-B52, 2005.
<br><br>BILOTI, Ricardo ; SANTOS, Lúcio Tunes dos ; TYGEL, M. . Automatic Smoothing by Optimal Splines. Revista Brasileira de Geofísica, Rio de Janeiro, v. 21, p. 171-178, 2005.
<br><br>SANTOS, Lúcio Tunes dos ; YANO, Flávio ; SALVATIERRA, Mário ; MARTINEZ, José Mario ; ADRIANI, Roberto ; TYGEL, M. . A global optimization algorithm applied to the common reflection surface (CRS) problem. Journal of Seismic Exploration, Londres, v. 14, p. 217-233, 2005.
<br><br>GARABITO, German ; OLIVA, Pedro Chira ; TYGEL, M. ; SANTOS, Lúcio Tunes dos . A quick review of 2D topography traveltimes. Revista Brasileira de Geofísica, v. 23, p. 5-13, 2005.
<br><br>MAJANA, Farid ; MASCARENHAS, Walter ; TYGEL, M. ; SANTOS, Lúcio Tunes dos . Refinement step for parameter estimation in the CRS method. Revista Brasileira de Geofísica, Rio de Janeiro, v. 21, p. 275-287, 2005.<br><br></div></div><div class="articles"><h1>2004</h1><div id="carregarAr12">PERROUD, H. ; TYGEL, M. . Nonstretch NMO. Geophysics, v. 69, p. 599-607, 2004.<br><br></div></div><div class="articles"><h1>2003</h1><div id="carregarAr13">SANTOS, Lucio T ; TYGEL, M. . Impedance-Type Approximations of the P-P Elastic Reflection Coefficient: Modeling and AVO Inversion. Geophysics, Estados Unidos, v. 69, p. 592-598, 2004.
<br><br>Chira Oliva, P. C. ; TYGEL, M. ; Hubral, P. ; SCHLEICHER, J. . A fourth-order CRS moveout for reflection or diffraction events: Numerical examples. Journal of Seismic Exploration, v. 12, n.10, p. 197-219, 2003.<br><br></div></div><div class="articles"><h1>2002</h1><div id="carregarAr14">TYGEL, M.; BILOTI, Ricardo ; SANTOS, Lucio T . Multiparametric traveltime inversion.. Studia Geophysica et Geodaetica, Republica Theca, v. 46, p. 177-192, 2002.
<br><br>TYGEL, M.; ZHANG, Y. ; BERGLER, S. ; HUBRAL, P. . Model-independent traveltime attributes for 2-D, finite-offset multi-coverage reflections.. Pure and Applied Geophysics, Nova Zelândia, v. 159, p. 1601-1616, 2002.
<br><br>SANTOS, Lucio T ; TYGEL, M. ; RAMOS, A. C. B. . Reflection impedance. Geophysics, v. 72, p. 225-228, 2002.
<br><br>ESCOBAR, C. C. P. ; TYGEL, M. ; SANTOS, Lucio T . Applications of automata theory to ray tracing. Geophysics, v. 72, p. 2011-2014, 2002.<br><br></div></div><div class="articles"><h1>2001</h1><div id="carregarAr15">TYGEL, M.; ZHANG, Y. ; HUBRAL, P. ; OLIVA, Pedro Chira . Analytic CRS formula for a 2D curved measurement surface and finite-offset reflections.. Journal of Seismic Exploration, Holanda, v. 10, p. 245-262, 2001.
<br><br>PERES, O. ; KOSLOFF, D. ; KOREN, Z. ; TYGEL, M. . A practical approach to true-amplitude migration.. Journal of Seismic Exploration, Holanda, v. 10, p. 183-204, 2001.
<br><br>TYGEL, M.; SCHLEICHER, J. ; SANTOS, L. T. ; HUBRAL, P. . The Kirchhoff Helmholtz integral pair.. Journal of Computational Acoustics, New York, v. 9, n.4, p. 1383-1394, 2001.
<br><br>BILOTI, Ricardo ; SANTOS, L. T. ; TYGEL, M. . Obtaining AVO and AVA Curves from CRS Attributes.. Journal of Seismic Exploration, Amsterdam, v. 10, p. 19-29, 2001.
<br><br>SCHLEICHER, J. ; SANTOS, L. T. ; TYGEL, M. . Seismic migration by demodeling.. Journal of Seismic Exploration, Amsterdam, v. 10, p. 59-76, 2001.
<br><br>SCHLEICHER, J. ; TYGEL, M. ; URSIN, B. ; N. Bleistein . The Kirchhoff-Helmholtz integral for anisotropic media.. Wave Motion, Amsterdam, v. 34, p. 353-364, 2001.
<br><br>TYGEL, M.. On: "Multicomponent Kirchhoff migration" (K. Hokstad, GEOPHYSICS, 65, 861?873). Geophysics, v. 66, p. 357, 2001.
<br><br>ROUSSET, D. ; TYGEL, M. ; PERROUD, H. . Attaching true amplitudes to kinematically migrated images. Journal of Seismic Exploration, v. 10, p. 292-295, 2001.<br><br></div></div><div class="articles"><h1>2000</h1><div id="carregarAr16">TYGEL, M.; CRUZ, J. C. R. ; SCHLEICHER, J. ; HUBRAL, P. ; HOCHT, G. . The Common Reflecting Element (CRE) method revisited. Geophysics, Tuksa, EUA, v. 65, p. 979-993, 2000.
<br><br>TYGEL, M.; SANTOS, L. T. ; SCHLEICHER, J. ; HUBRAL, P. . Modeling, migration and demigration. Geophysics, Tulsa, EUA, v. 19, p. 712-715, 2000.
<br><br>TYGEL, M.; SCHLEICHER, J. ; SANTOS, L. T. ; HUBRAL, P. . An asymptotic inverse to the Kirchhoff-Helmholtz integral. Inverse Problems, EUA, v. 16, p. 425-445, 2000.
<br><br>TYGEL, M.; SCHLEICHER, J. ; SANTOS, L. T. ; HUBRAL, P. . Seismic modeling by demigration. Geophysics, Tulsa, EUA, v. 65, p. 1281-1289, 2000.
<br><br>TYGEL, M.; N. Bleistein . An Introduction to this Special Section. Leading Edge (Tulsa, Okla.), v. 19, p. 37, 200<br><br></div></div><div class="articles"><h1>1999</h1><div id="carregarAr17">TYGEL, M.; URSIN, B. . Weak-contrast edge and vertex diffractions in anisotropic elastic media. Wave Motion, New York, v. 29, p. 363-373, 1999.
<br><br>FILPO, E. ; TYGEL, M. . Deep-water multiple suppression in the near-offset range. Leading Edge (Tulsa, Okla.), Tulsa, v. 18, n.01, p. 81-84, 1999.
<br><br>TYGEL, M.; SANTOS, L. T. ; SCHLEICHER, J. ; HUBRAL, P. . AVO/AVA by Kirchhoff-type true-amplitude imaging. Leading Edge (Tulsa, Okla.), Tulsa, v. 18, n.08, p. 940-945, 1999.
<br><br>BIRGIN, E. G. ; BILOTI, Ricardo ; TYGEL, M. ; SANTOS, L. T. . Restricted optimization: a clue to a fast and accurate implementation of the Common Reflection Surface Stack method. Journal of Applied Geophysics, Holanda, v. 42, p. 143-155, 1999.
<br><br>TYGEL, M.; SANTOS, L. T. ; SCHLEICHER, J. . Multifocus moveout revisited: derivations and alternative expressions. Journal of Applied Geophysics, Holanda, v. 42, p. 319-331, 1999.
<br><br>SANTOS, L. T. ; SCHLEICHER, J. ; TYGEL, M. ; HOCHT, G. . Seismic modeling by demigration. Geophysics, Tulsa, 1999.
<br><br>TYGEL, M.; SANTOS, Lucio T ; SCHLEICHER, J. . Kirchhoff imaging as a tool for AVO/AVA analysis. Leading Edge (Tulsa, Okla.), v. 18, p. 940-945, 1999.
<br><br>FILPO, E. ; TYGEL, M. . Near-offset multiple suppression. Journal of Seismic Exploration, v. 8, p. 1330-1333, 1999.
<br><br>RAMOS, A. C. B. ; Oliveira, Adelson S. ; TYGEL, M. . The impact of true amplitude DMO on amplitude versus offset. Journal of Seismic Exploration, v. 18, p. 832-835, 1999.
<br><br>TYGEL, M.; SCHLEICHER, J. ; SANTOS, L. T. . The Kirchhoff-Helmholtz integral pair. Journal of Seismic Exploration, v. 18, p. 1821-1824, 1999.
<br><br>TYGEL, M.; SANTOS, Lucio T ; SCHLEICHER, J. ; HUBRAL, P. . Kirchhoff imaging as a tool for AVO/AVA analysis. Geophysics, v. 18, p. 836-839, 1999.<br><br></div></div><div class="articles"><h1>1998</h1><div id="carregarAr18">Jaramillo, Herman ; SCHLEICHER, J. ; TYGEL, M. . To: "A unified approach to 3-D seismic reflection imaging, Part II: Theory" (M. Tygel, J. Schleicher, and P. Hubral, GEOPHYSICS, 61, 759?775). Geophysics, v. 63, p. 670-673, 1998.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. ; SANTOS, Lucio T . 2.5-D true-amplitude Kirchhoff migration to zero offset in laterally inhomogeneous media. Geophysics, v. 63, p. 557-573, 1998.<br><br></div></div><div class="articles"><h1>1997</h1><div id="carregarAr19">SCLEICHER, J. ; HUBRAL, P. ; TYGEL, M. ; JAYA, S. J. . Minimum Apertures And Fresnel Zones In Migration And Demigration. Geophysics, Tulsa, v. 62, n.1, p. 183-194, 1997.
<br><br>URSIN, B. ; TYGEL, M. . Reciprocal Volume And Surface Scattering Integrals For Anisotropic Elastic Media. Wave Motion, New York, v. 26, n.1, p. 31-42, 1997.
<br><br>NOVAIS, M. A. ; SANTOS, L. T. ; TYGEL, M. ; URSIN, B. . A unified Born-Kirchhoff approximation for acoustic media. Journal of Seismic Exploration, Amsterdam, v. 6, n.2, p. 217-226, 1997.
<br><br>SANTOS, L. T. ; SCHLEICHER, J. ; TYGEL, M. . 2.5-D True-amplitude offset continuation. Journal of Seismic Exploration, Amsterdam, v. 6, n.2, p. 103-116, 1997.
<br><br>MARTINS, J. L. ; SCHLEICHER, J. ; TYGEL, M. . 2.5-D True-amplitude migration and demigration. Journal of Seismic Exploration, Amsterdam, v. 6, n.2, p. 159-180, 1997.
<br><br>OLIVEIRA, A. ; TYGEL, M. ; FILPO, E. . On the apllication of true-amplitude DMO. Journal of Seismic Exploration, Amsterdam, v. 6, n.2, p. 279-290, 1997.
<br><br>TYGEL, M.; Müiller, Thilo ; HUBRAL, P. ; SCHLEICHER, J. . Eigenwave based multiparameter traveltime expansions. Journal of Seismic Exploration, v. 8, p. 1770-1773, 1997.
<br><br>SANTOS, L. T. ; SCHLEICHER, J. ; TYGEL, M. ; HUBRAL, P. . Modeling by demigration. Journal of Seismic Exploration, v. 16, p. 1909-1912, 1997.<br><br></div></div><div class="articles"><h1>1996</h1><div id="carregarAr20">SANTOS, L. T. ; URSIN, B. ; TYGEL, M. . Wave Series Expansions For A Stratified Fluid. Russian Geology and Geophysics, New York, v. 37, n.9, p. 23-45, 1996.
<br><br>HUBRAL, P. ; TYGEL, M. ; SCHLEICHER, J. . Seismic Image Waves. Geophysical Journal International, London, v. 125, n.4, p. 431-442, 1996.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . A Unified Approach To 3-D Seismic Reflection Imaging - Part II: Theory. Geophysics, Tulsa, v. 61, n.3, p. 759-775, 1996.
<br><br>HUBRAL, P. ; SCHLEICHER, J. ; TYGEL, M. . A Unified Approach To 3-D Seismic Reflection Imaging - Part I: Basic Concepts. Geophysics, Tulsa, v. 61, n.3, p. 742-758, 1996.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . 2.5-D Kirchoff MZO in laterally inhomogeneous media. Journal of Seismic Exploration, v. 7, p. 483-486, 1996.<br><br></div></div><div class="articles"><h1>1995</h1><div id="carregarAr21">TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . Dualities Between Reflectors And Reflection-Time Surfaces. Journal of Seismic Exploration, Amsterdam, v. 4, p. 123-150, 1995.
<br><br>HUBRAL, P. ; TYGEL, M. ; SCHLEICHER, J. . Geometrical-spreading and ray-caustic decomposition of elementary seismic waves. Geophysics, Tulsa, v. 60, n.04, p. 1195-1202, 1995.
<br><br>SCHLEICHER, J. ; TYGEL, M. ; HUBRAL, P. . Reply by the authors to the discussion by Gijs J. O. Vermeer. Geophysics, v. 60, p. 922-923, 1995.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . Reply by the authors to Arthur E. Barnes. Geophysics, v. 60, p. 1944-1946, 1995.<br><br></div></div><div class="articles"><h1>1994</h1><div id="carregarAr22">TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . Kirchhoff-Helmholtz Theory In Modelling And Migration. Journal of Seismic Exploration, Amsterdam, v. 3, n.3, p. 203-214, 1994.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . Pulse Distortion In Depth Migration. Geophysics, Tulsa, v. 59, n.10, p. 1561-1569, 1994.
<br><br>TYGEL, M.. On The Convergence Of The Nmo-Power Series For A Horizontally Stratified Medium. Russian Geology and Geophysics, New York, v. 35, n.5, p. 124-132, 1994.<br><br></div></div><div class="articles"><h1>1993</h1><div id="carregarAr23">SCHLEICHER, J. ; HUBRAL, P. ; TYGEL, M. . Three-dimensional Primary Zero-Offset Reflections. Geophysics, Tulsa, v. 58, n.05, p. 692-702, 1993.
<br><br>SHLEICHER, J. ; HUBRAL, P. ; TYGEL, M. ; HANITZSH, C. . Determination of Fresnel Zones from Traveltime Measurements. Geophysics, Tulsa, v. 58, n.05, p. 703-712, 1993.
<br><br>SCHLEICHER, J. ; TYGEL, M. ; HUBRAL, P. . 3D True-Amplitude Finite-Offset Migration. Geophysics, Tulsa, v. 58, n.08, p. 1112-1126, 1993.
<br><br>SCHLEICHER, J. ; TYGEL, M. ; HUBRAL, P. . Parabolic and Hyperbolic Paraxial Two-Point Traveltimes in 3-D Media. Geophysical Prospecting, The Hague, v. 41, n.04, p. 495-554, 1993.
<br><br>TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. ; HANITZSH, C. . Multiple Weights in Diffraction Stack Migration. Geophysics, Tulsa, v. 58, n.12, p. 1820-1830, 1993.
<br><br>SCHLEICHER, J. ; HUBRAL, P. ; TYGEL, M. . Geometrical-Spreading Correction by a Dual Diffraction Stack. Geophysics, Tulsa, v. 58, n.12, p. 1870-1873, 1993.<br><br></div></div><div class="articles"><h1>1992</h1><div id="carregarAr24">TYGEL, M.; SCHLEICHER, J. ; HUBRAL, P. . Geometrical - Spreading Corrections of Offset Reflections in a Laterally Inhomogeneous Earth. Geophysics, Tulsa, v. 57, n.08, p. 1054-1063, 1992.
<br><br>HUBRAL, P. ; SCHLEICHER, J. ; TYGEL, M. . Three-Dimensional Paraxial Ray Properties - Part I. Basic Relations. Journal of Seismic Exploration, Amsterdam, v. 1, n.03, p. 265-279, 1992.
<br><br>HUBRAL, P. ; SCHLEICHER, J. ; TYGEL, M. . Three-Dimensional Paraxial Ray Properties - Part II. Applications. Journal of Seismic Exploration, Amsterdam, v. 1, n.04, p. 347-362, 1992.
<br><br>HUBRAL, P. ; SCHLEICHER, J. ; HANITZSCH, C. ; TYGEL, M. . Determination of fresnel zones from traveltime measurements. Journal of Seismic Exploration, v. 11, p. 1236-1239, 1992<br><br></div></div><div class="articles"><h1>1991</h1><div id="carregarAr25">TYGEL, M.; LEYKAM, A. ; HUBRAL, P. ; AMORIM, W. N. ; PESTANA, R. C. . Transforming a Point-Source Seismogram into a Beam Seismogram. Geophysics, Tulsa, v. 56, n.11, p. 1819-1824, 1991.
<br><br>HUBRAL, P. ; TYGEL, M. ; ZIEN, H. . 3D True-Amplitude Zero- Offset Migration. Geophysics, Tulsa, v. 56, n.01, p. 18-26, 1991.
<br><br>SHLEICHER, J. ; HUBRAL, P. ; TYGEL, M. . Non-Specular Reflections from a Curved Interface. Geophysics, Tulsa, v. 56, n.08, p. 1203-1214, 1991.
<br><br>TYGEL, M.; HUCK, H. ; HUBRAL, P. . Mixed-delay wavelet deconvolution of the point-source seismogram. Geophysics, Tulsa, v. 56, n.09, p. 1405-1411, 1991.
<br><br>HUBRAL, P. ; TYGEL, M. . Reply by the authors to David F. Aldridge. Geophysics, v. 56, p. 149, 1991.
<br><br>HUBRAL, P. ; TYGEL, M. ; ZIEN, H. . Three-dimensional true-amplitude zero-offset migration. Geophysics, v. 56, p. 18-26, 1991.<br><br></div></div><div class="articles"><h1>1989</h1><div id="carregarAr26">HUBRAL, P. ; TYGEL, M. . Analysis of the Rayleigh pulse. Geophysics, Tulsa, v. 54, n.05, p. 654-658, 1989.
<br><br>TYGEL, M.; HUBRAL, P. . Constant Velocity Migration in the Various Guises of Plane-Wave Theory. Surveys in Geophysics, London, v. 10, p. 331-348, 1989<br><br></div></div><div class="articles"><h1>1987</h1><div id="carregarAr27">HUBRAL, P. ; TYGEL, M. . A Fresh Look At Causality In Wave Propagation.. EOS Transactions. American Geophysical Union, Holanda, v. 32, n.04, p. 277-289, 1987.
<br><br>AMORIM, W. N. ; HUBRAL, P. ; TYGEL, M. . Computing Field Statics With The Help Of Seismic Tomography.. Geophysical Prospecting, The Hague, v. 35, p. 907-919, 1987.<br><br></div></div><div class="articles"><h1>1986</h1><div id="carregarAr28">HUBRAL, P. ; TYGEL, M. . Transient Finite Integral Point-Source Response From A Planar Acoustic Interface: The Causality Approach.. Geophysical Prospecting, The Hague, v. 34, p. 1-10, 1986.
<br><br>TYGEL, M.; HUBRAL, P. . Finite Integral Solution for the Point-Source Response of a Layered Acoustic Medium. Geophysical Journal International, Inglaterra, v. 48, p. 647-651, 1986.<br><br></div></div><div class="articles"><h1>1985</h1><div id="carregarAr29">HUBRAL, P. ; TYGEL, M. . Transient Response From A Planar Acoustic Interface By A New Point-Source Decomposition Into Plane Waves.. Geophysics, Tulsa, v. 50, n.05, p. 776-774, 1985.
<br><br>TYGEL, M.; HUBRAL, P. . Transient plane-wave transforms for the point-source seismogram. Geophysics, Tulsa, v. 50, n.12, p. 2889-2891, 1985.
<br><br>TYGEL, M.; HUBRAL, P. . Transient analytic point-source response of a layered acoustic medium: Part II. Geophysics, v. 50, p. 1478-1487, 1985.
<br><br>TYGEL, M.; HUBRAL, P. . Transient analytic point-source response of a layered acoustic medium: Part I. Geophysics, v. 50, p. 1466-1477, 1985.<br><br></div></div><div class="articles"><h1>1984</h1><div id="carregarAr30">TYGEL, M.; HUBRAL, P. . Transient Representation Of Sommerfeld-Weyl Integral With Application To The Point-Source Response From A Planar Interface.. Geophysics, Tulsa, v. 49, n.09, p. 1495-1505, 1984.
<br><br>TYGEL, M.; HUBRAL, P. . Exact Transient Analytic Finite Integral Point-Source Response Of A Layered Acoustic Medium. Part I.. Journal of Seismic Exploration, Tulsa, v. 3, n.9, p. 791-792, 1984.
<br><br>HUBRAL, P. ; TYGEL, M. . Exact Transient Analytic Finite Integral Point-Source Response Of A Layered Acoustic Medium: Part II. Journal of Seismic Exploration, Tulsa, v. 3, n.09, p. 793-795, 1984.<br><br></div></div><div class="articles"><h1>1981</h1><div id="carregarAr31">SINGH, P. ; TYGEL, M. . On Some Analytic Functions In The Unit Disc.. Indian Journal of Pure and Applied Mathematics, India, v. 12, n.04, p. 513-520, 1981.<br><br></div></div></section>
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