| • | Core J2EE Patterns, by Deepak Alur, John Crupi, Dan Malks (Prentice Hall PTR, 2003) |
| • | "Mapping Classes to Relational Tables," by Richard Jensen (Java Pro, April 28, 2004) |
| • | "Union and Vertical Mapping of Classes," by Richard Jensen (Java Pro, May 5, 2004) |
| • | FTPOnline's J2EE Hot Topic page |
| • | FTPOnline's Servlets/JSP Hot Topic page |