1. GPS: Theory and Practice, B. Hofmann Wellenhof et al., Springer Verlag, 1992, ISBN 3-211- 82364-6 and 0-387-82364-6.
2. Understanding GPS: Principles and Applications (Artech House Telecommunications Library), Elliott D. Kaplan (Editor) / Hardcover / (1996), (USD 99).
3. GSM Networks: Protocols, Terminology and Implementation by Gunnar Heine.
4. GSM Switching, Services, and Protocols by Joerg Eberspaecher.
5. GSM System Engineering (Artech House Mobile Communications Series) by Asha K. Mehrotra.