ODP and C3I Systems. - John A. Bull; Bryan M. Wood (Open Distributed Processing, 1991)

Towards Security in an Open Systems Federation. - John A. Bull; Li Gong; Karen R. Sollins (ESORICS, 1992)

A Nested Mutual Authentication Protocol. - John A. Bull; David J. Otway (ACM SIGOPS Oper. Syst. Rev., 1999)