The multics PL/1 compiler. - Robert A. Freiburghouse (AFIPS Fall Joint Computing Conference, 1969)

Report of session on systems programming languages. - Robert A. Freiburghouse; Robert M. Graham (SIGPLAN-SIGOPS Interface Meeting, 1973)

Report of session on structured programming. - Robert A. Freiburghouse; Barbara Liskov (SIGPLAN-SIGOPS Interface Meeting, 1973)

Register Allocation Via Usage Counts. - Robert A. Freiburghouse (Commun. ACM, 1974)

Proposed extensions to PL/I for real-time applications. - Robert A. Freiburghouse (ACM SIGPLAN Notices, 1977)