1. Lecture Notes in Computer Science;D. Chaum,1991
2. Dai, J.Z., Yang, X.H., Dong, J.X.: Designated-receiver proxy signature scheme for electronic commerce. In: Proc. of IEEE International Conference on Systems, Man and Cybernetics, pp. 384–389. IEEE Press, Los Alamitos (2003)
3. Lecture Notes in Computer Science;S.D. Galbraith,2003
4. Lecture Notes in Computer Science;M. Jakobsson,1996
5. Lecture Notes in Computer Science;F. Laguillaumie,2005