Secure Billing for Mobile Information Services in UMTS. - Keith M. Martin; Bart Preneel; Chris J. Mitchell; Hans-Joachim Hitz; Günther Horn; Alla Poliakova; Peter Howard (IS&N, 1998)

Authentication and Payment in Future Mobile Systems. - Günther Horn; Bart Preneel (J. Comput. Secur., 2000)

Authentication protocols for mobile network environment value-added services. - Günther Horn; Keith M. Martin; Chris J. Mitchell (IEEE Trans. Veh. Technol., 2002)

Towards 5G Security. - Peter Schneider; Günther Horn (TrustCom/BigDataSE/ISPA (1), 2015)