Brown, WS "A language and system for symbolic algebra on a digital computer"

[ACM] (1966) [ACM] CACM 9(08) August 1966  

Languages mentioned ALPAK {1963} Extension to ALTRAN to manipulate polynomials and rational functions ALPAKB {1966} Generalised version of ALPAK OEDIPUS {1964} Bell Labs interpretive algebraic system