1. Helping us to help ourselves: assessing administrators' use of security analysis tools;Furnell,2004
2. Whitten, A. and Tygar, J.D. 1999. “Why Johnny can't encrypt: A usability evaluation of PGP 5.0”, in Proceedings of the 8th USENIX Security Symposium, Washington, D.C., USA, August 23-26, 1999.
3. Network Associates drops PGP;Schultz;Computers & Security,2002
4. Security and human computer interfaces;Johnston;Computers & Security,2004