1. Rappaport, T. S. (2004). Wireless communications, principles and practice (2nd ed.). Englewood Cliffs: Prentice Hall PTR.
2. Bhuvaneswari, A. (2012). An overview of vertical handoff decision making algorithms. In Proceedings of IEEE conference, I. Journal of Computer Network and Information Security, (Vol. 9, pp. 55–62).
3. Radhika, K., & Venugopal Reddy, A. (2011) Vertical handoff decision using game theory approach for multi-mode mobile terminals in next generation wireless networks. In Proceedings of international journal of computer applications (0975–8887) (Vol. 36, no. 11).
4. Fouladian, M., Hendessi, F., Shafieinejad, A., & Darvishi, B. (2008). A new vertical handoff method for 3G/WLAN Networks. In Proceedings of IEEE international conference on advanced computer control.
5. Anup, S., & Roy, S. D. (2012) Received signal strength based vertical handoff algorithm in 3G cellular network. In Proceedings of IEEE international conference (ICSPCC), $$Hong Kong\_Polytechnic University$$ H o n g K o n g _ P o l y t e c h n i c U n i v e r s i t y (pp. 326–330).