1. Early system on Datatron 200 series. Listed in CACM 2(5):16 (May 1959).

2. Simulation of Industrial Management Problems with Lots of Equations. R.K. Bennett, 1958. Predecessor to DYNAMO, for IBM 704.

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SIMPAC « SIMPAS « SIMPL « SIMPLE » Simple Actor Language » Simple Authentication and Security Layer » Simple Gateway Control Protocol