Wiederhold, Gio, and Ehrman, John; "Inferred SYNTAX and SEMANTICS of PL/S"

[LSI 1971] (1971) [ACM] SIGPLAN Notices 6(10) October 1971 Proceedings of the SIGPLAN symposium on Languages for system implementation 1971, Lafayette, Indiana, United States; October, 1971  

Languages mentioned Basic Systems Language {1971} Forerunner of PL/S PL/S {1968} Programming Language/Systems