1. Dandash, O., Wang, Y., Le, P.D., Srinivasan, B.: A new Dynamic Key Generation Scheme for Fraudulent Internet Payment. In: International Conference on Information Technology, 0-7695-2776-0/07
2. Kanwal, S., Zafar, N.A.: Modeling of Automated Teller Machine System Using Discrete Structures. In: Proceedings of 8th IPMC (2007)
3. Li, Chen, Ma: Security in GSM (retrieved October 24th, 2004 from GSM-security)
4. Huynh, Nguyen: Overview of GSM and GSM security (retrieved October 25th, 2004 from Oregon State University, project)
5. ETS 300 608. Digital Cellular Telecommunication System (Phase 2), Specification of the Subscriber Identity Module-Mobile Equipment (SIM-ME) Interface. European Telecommunications Standards Institute (May 1998)