Stahl, W.R. "Genetic Adaptation as a Solvability Problem for a Turing Machine" pp 570-571

Kalenich W.A. (1965) Kalenich W.A. (ed), Proceedings IFIP Congress (New York, May 24-29, 1965), Spartan Books, New York, 1965.  

Languages mentioned CLPP {1963} Cellular list procssing language