A Programming Language Extension for Access to a Shared Data Base. - Rita C. Summers; Charles D. Coleman; Eduardo B. Fernández (ACM Pacific, 1975)

An Authorization Model for a Shared Data Base. - Eduardo B. Fernández; Rita C. Summers; Charles D. Coleman (SIGMOD Conference, 1975)

Architecture Support for System Protection. - Eduardo B. Fernández; Rita C. Summers; Charles D. Coleman (ISCA, 1976)

Architectural Support for System Protection and Database Security. - Eduardo B. Fernández; Rita C. Summers; Tomás Lang; Charles D. Coleman (IEEE Trans. Computers, 1978)