XML

• W3C XML Standards
• OASIS-Open / Cover XML Pages
• Xml.com
• Xmlhack.com

XSLT

• XSL FAQ
• Jeni Tennison XSLT Pages
• XSLT Mailing List
• Michael Kay, XSLT Programmer's Reference. 2nd edition. Wrox. 2001. 1861005067.
• Ken Holman, Definitive XSLT and XPath. Prentice Hall. 2001. 2001. 0130651966.
• Steve Muench, Building Oracle XML Applications. O'Reilly. 2000. 1565926919. (Chapter 7, Transforming XML with XSLT, is available on the O'Reilly site).

XML and Databases

• Ron Bourret, XML and Databases
• Howard Katz, "An Introduction to XQuery"
• Jayavel Shanmugasundaram, "Bridging Relational Technology and XML" [PDF]

Semantic Web

• Tim Berners-Lee, et al., "The Semantic Web"
• Semanticweb.org
• RDF Primer

Web Information Retrieval

• Jon Kleinberg and Steve Lawrence, "The Structure of the Web" [PDF] (For additional papers by these authors on search-related topics, see Kleinberg and Lawrence)
• Sergey Brin and Larry Page, "The Anatomy of a Large-Scale Hypertextual Web Search Engine"
• Arvind Arasu, et al., "Searching the Web"
• September 2000 issue of the Data Engineering Bulletin on "Next-Generation Web Search"
• Einat Amitay's Web IR links
• Monika Henziger, "Web Information Retrieval"