Dahl, Ole-johan, and Kristen Nygaard, "Basic concepts of SIMULA, an ALGOL based simulation language" pp116-124

Hollingdale, S.M. (ed.) (1965) Hollingdale, S.M. (ed.) "Digital Simulation in Operations Research", English Universities Press, London, 1965   Ole-Johan Dahl

Languages mentioned SIMULA {1962} SIMUlation LAnguage