A Secure Authentication Policy for UMTS and WLAN Interworking. - Yen-Chieh Ouyang; Chang-Bu Jang; Hung-Ta Chen (ICC, 2007)

Secure data transmission with cloud computing in heterogeneous wireless networks. - Chung-Hua Chu; Yen-Chieh Ouyang; Chang-Bu Jang (Secur. Commun. Networks, 2012)