Books
XML and Java(TM): Developing Web Applications (2nd Edition)
Building Web Services with Java: Making Sense of XML, SOAP, WSDL and UDDI
Herong's Tutorial Notes on Web Service and SOAP
Java & XML, 2nd Edition: Solutions to Real-World Problems
Professional Xml
Professional XML for .NET Developers
Professional XML Schemas
Understanding Web Services: XML, WSDL, SOAP, and UDDI
XML Bible (2nd Edition)
XML Pocket Reference (2nd Edition)
XML Programming (Core Reference)
XML: Extensible Markup Language