An upper bound on the path number of a digraph. - Richard C. O'Brien (J. Comb. Theory B, 1977)

Noninterference and the Unwinding for LOCK. - Todd Fine; J. Thomas Haigh; Richard C. O'Brien; Dana L. Toups (CSFW, 1989)

The LDV Approach to Database Security. - J. Thomas Haigh; Richard C. O'Brien; Paul D. Stachour; Dana L. Toups (DBSec, 1989)

The LDV Secure Relational DBMS Model. - J. Thomas Haigh; Richard C. O'Brien; D. J. Thomsen (DBSec, 1990)

Napoleon: A Recipe for Workflow. - Charles N. Payne; D. J. Thomsen; J. Bogle; Richard C. O'Brien (ACSAC, 1999)

Napoleon: Network Application Policy Environment. - D. J. Thomsen; Richard C. O'Brien; Charles N. Payne (ACM Workshop on Role-Based Access Control, 1999)

The case for prevention-based, host-resident defenses in the modern PCS network. - Charles N. Payne Jr.; Richard C. O'Brien; J. Thomas Haigh (CSIIRW, 2009)

Trapping Malicious Insiders in the SPDR Web. - J. Thomas Haigh; Steven A. Harp; Richard C. O'Brien; Charles N. Payne; Johnathan Gohde; John Maraist (HICSS, 2009)