1. Jefferson, D., Rubin, A.D., Simons, B., Wagner, D.: A Security Analysis of the Secure Electronic Registration and Voting Experiment (SERVE) (2004)
2. Ansper, A., Buldas, A., Oruaas, M., Priisalu, J., Veldre, A., Willemson, J., Kivinurm, K.: The Security of Conception of E-voting: Analysis and Measures. E-hääletamise kontseptsiooni turve: analüüs ja meetmed (2003)
3. Lecture Notes in Computer Science;A. Buldas,2006
4. Estonian National Electoral Committee home page,
http://www.vvk.ee
5. Schneier, B.: Attack Trees. Dr. Dobb’s Journal, Modeling Security Threats (December 1999)