Associating Style Sheets with XML documents Version 1.0: W3C specification that allows a style sheet to be associated with an XML document by including one or more processing instructions with a target of xml-stylesheet in the document's prolog. (W3C Recommendation 29 June 1999)
Choosing Between CSS and XSL: Internet Explorer 5 supports both CSS and XSL style sheets for use with XML. This discusses both and highlights some of the benefits of using XSL.
XML Script: XML Script is an alternative to XSL that claims to be simpler to use for data transformation tasks.
XSL Developer's Guide: Indispensable reading for professional XML/XSL developers, it covers introductory topics like writing basic patterns, as well as advanced subjects like combining script & XSL.
