I wondered what became of Dennis, the author. He got his PhD in 2004 and is now doing computer modeling of infections diseases. <a href="http:&#x2F;&#x2F;www.cs.unm.edu&#x2F;~dlchao&#x2F;resume.html" rel="nofollow">http:&#x2F;&#x2F;www.cs.unm.edu&#x2F;~dlchao&#x2F;resume.html</a>