Tobey, R G "Investigating symbolic mathematical computation using PL/1 FORMAC batch system and Scope FORMAC interactive system"

Tobey (ed) (1969) Tobey, R. G. (ed) Proceedings of the 1968 Summer Institute on Symbolic Mathematical Computation, IBM Federal Systems Center, Gaithersburg, Maryland, July-August 1968, IBM Programming Laboratory Report No. FSC-69-0312 (proceedings published June 1969).  

Languages mentioned FORMAC {1962} FORmula MAnipulation Compiler PL/I-FORMAC {1968} Scope FORMAC {1968}