Equality, types and generic modules for logic programming. A language using Horn clauses. J.A. Goguen, J. Meseguer.
OBJ2 plus logic programming based on Horn logic with equality.
“EQLog: Equality, Types and Generic Modules for Logic Programming”, J. Goguen et al in Functional and Logic Programming, D. DeGroot et al eds, pp.295-363, P-H 1986.
Language for typesetting mathematics. “A System for Typesetting Mathematics”, B.W. Kernighan and L.L. Cherry, CACM 18(3):151-157 (Mar 1975).
1. . equipment (shortwave transmission)