XSLT match https://www.w3.org/TR/xslt/#patterns
XSL Transformer https://www.freeformatter.com/xsl-transformer.html#ad-output
XSLT for GML http://www.isprs.org/proceedings/XXXV/congress/comm4/papers/338.pdf
XSLT v příkladech https://www.kosek.cz/xml/xslt/index.html
XSL Tools list http://www.dpawson.co.uk/xsl/sect1/N795.html
XML XSD Technology https://dret.net/lectures/xml-fall13/img/xml-technology-syntaxes.png
DTD schemas (Document type Definition) https://www.sitepoint.com/xml-dtds-xml-schema/