Links
http://www.e-technik.fh-kiel.de/universe/digital1/shannon/cshannon.htm
http://www.fee.unicamp.br/sbt/
http://www.lucent.com/informationtheory/
http://www.linkelectronics.com/htm/techee.htm
http://www.wsome.com/fecha/armstrong.htm
http://www.comsoc.org/overview/D1.html
http://www.erols.com/oldradio/index.htm