1. Ameritech Mobile Communications et al., “Cellular digital packet data system specifications, part 406: airlink security,” CDPD Industry Input Coordinator, Costa Mesa, Calif., July 1993.
2. Lect Notes Comput Sci;J. Daemen,1994
3. W. Feller, An Introduction to Probability Theory and its Applications. New York: Wiley, 3. edition, vol. 1, 1968.
4. Lect Notes Comput Sci;P. Flajolet,1990
5. Lect Notes Comput Sci;J. Dj. Golić,1993