E. Weippl, M. Klemen:
"Implementing IT Security for Small and Medium-Sized Enterprises";
in: "Enterprise Information Systems Assurance and System Managerial and Technical Issues", Idea Group Publishing, 2006, ISBN: 1-59140-911-x.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC06586842