Caracciolo di Forino , A., L. Spanedda , N. Wolkenstein; "PANON-1B: A programming language for symbol manipulation"

[ACM] (1966) [ACM] Proceedings of the ACM symposium on Symbolic and algebraic manipulation, 1966  

Languages mentioned PANON-1 {1963} Markov-pattern-directed string processing language PANON-1B {1965} Pattern-directed symbol manipulation language