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http://www.norman.Com/

http://bibd.unl.edu/~stinson/CTAP.html

http://mls.saic.com/

http://www.surety.com/

http://www.v-one.com/

http://ciac.llnl.gov/cstc/CSTCHome.html

http://www.cs.cmu.edu/afs/cs.cmu.edu/user/bsy/www/sec.html

http://www.alw.nih.gov/Security/security.html

http://www-ns.rutgers.edu/www-security/index.html

http://www.w3.org/hypertext/WWW/AccessAuthorization/Overview.html

http://www.w3.org/hypertext/WWW/Shen/ref/shen.html

http://www.w3.org/hypertext/WWW/Protocols/HTTP/digest_specification.html

http://www.eit.com/projects/s-http/index.html

http://iss.net/iss/

http://www.nha.com/

http://gti.net/safety/