The following information sources are useful adjuncts to this article:

• Standard Performance Evaluation Corporation (SPEC): The SPECjAppServer2002 benchmark*
  
  
• Standard Performance Evaluation Corporation (SPEC), The SPECjAppServer2004 benchmark*
  
  
• Deepak Alur, John Crupi, Dan Malks, "Core J2EE patterns: best practices and design strategies," 2001, Prentice Hall PTR.
  
  
• Floyd Marinescu, "EJB Design Patterns," 2002, John Wiley & Sons.
  
  
• Alejandro Buchmann, Samuel Kounev, "Improving Data Access of J2EE Applications by Exploiting Asynchronous Messaging and Caching Services," in proceedings of the 28th VLDB Conference, Hong Kong, China, 2002.