FORMAC
FORmula MAnipulation Compiler. J. Sammet & Tobey, IBM Boston APD, 1962. An extension of Fortran for symbolic mathematics. Versions: PL/I-FORMAC and FORMAC73.
["Introduction to FORMAC", J.E. Sammet et al, IEEE Trans Elec Comp (Aug 1964)].
[Sammet 1969, pp. 474-491].