Pattern recognition studies in the biomedical sciences. - Robert S. Ledley; Louis S. Rotolo; Marilyn Belson; John Jacobsen; James Bruce Wilson; Thomas J. Golab (AFIPS Spring Joint Computing Conference, 1966)

BUGSYS: a programming system for picture processing - not for debugging. - Robert S. Ledley; John Jacobsen; Marilyn Belson (Commun. ACM, 1966)

An automated management system for applications software. - John Jacobsen (SIGUCCS, 1984)