Hirt, Martin, and Kazue Sako. Efficient Receipt-Free Voting based on Homomorphic Encryption In
Advances in Cryptology, EUROCRYPT’00, Lecture Notes in Computer Science 1807. Berlin: Springer-Verlag, 2000.
Tkachenko, S.. "
EU enlargement and Russia’s Security Concerns." In
Russia and the European Security Institutions: Entering the Twenty First Century. Moscow: Carnegie Institute, 2000.