Constantinos Markantonakis Keith Mayes Michael Tunstall Damien Sauveron Fred Piper 201-233 2007 Computational Intelligence in Information Assurance and Security http://dx.doi.org/10.1007/978-3-540-71078-3_8 series/sci/2007-57 db/series/sci/sci57.html#MarkantonakisMTSP07