W. T. N.-W. C. L.-Z. D. Kuo-Liang Ou, Kun-Rong Hsie, Mingteh Chen, “The Integration of Heterogeneous Wireless Networks (IEEE 802.11/IEEE 802.16) and its QoS Analysis”, Int. j. commun. netw. inf. secur., vol. 2, no. 3, Dec. 2010.