E. Weippl:
"Securing Mobile Communication: RADIUS in a Windows Environment";
in: "Mobile Multimedia: Communication Engineering Perspective", Nova Science Publishers, 2006, ISBN: 1-60021-207-7, 22 - 37.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC06586841