An Efficient Non-Repudiation Billing Protocol in Heterogeneous 3G-WLAN Networks

A. Fanian, F. Alamifar, M. Berenjkoub, "An Efficient Non-Repudiation Billing Protocol in Heterogeneous 3G-WLAN Networks", the ISC International Journal of Information Security, Vol. 6, No. 2, pp.141-153, July 2014.