w3c xslt engine – http://www.w3.org/2001/05/xslt
jon udell’s xslt radio tutorial – http://radio.weblogs.com/0100887/stories/
2002/03/18/anXsltTutorial.html
cancore xsd file – http://cancore.athabascau.ca/schema/cancore_v1.xsd
extending RSS 2 with namespaces- http://www.disobey.com/detergent/2002/extendingrss2/
rss 2.0 validator – http://feeds.archive.org/validator/about.html