XML Schema
Articles
XML Schemas: Best Practices, February 2003
XML Journal: XML Schema Best Practices, September 2003.
Books
Essential XML Quick Reference by Aaron Skonnard & Martin Gudgin (Addison-Wesley) (Free download)
- Professional XML Schemas by Jon Duckett (Wrox Press Inc.) (ISBN 1861005474)
XML Schema by Eric Van Der Vlist (O'Reilly & Associates) (ISBN 0596002521)
XML Schema Essentials by R. Allen Wyke & Andrew Watt (John Wiley & Sons) (ISBN 0471412597)
(Listed alphabetically)