XSLT Standard Version 1.0: http://www.w3.org/TR/xslt
Sablotron: http://www.gingerall.com/charlie/ga/xml/x_sabperl.xml
XML Path Language (XPath): http://www.w3.org/TR/xpath
XSLT C Library for Gnome: http://xmlsoft.org/XSLT/