J. Gil, und I. Maman. OOPSLA '05: Proceedings of the 20th annual ACM SIGPLAN conference on Object oriented programming, systems, languages, and applications, Seite 97--116. San Diego, CA, USA, ACM, (2005)
A. Ayerbe, und I. Vazquez. Computer Software and Applications Conference, 1998. COMPSAC '98. Proceedings. The Twenty-Second Annual International, (August 1998)