Symes, L.R. and Roman, R.V. "Structure of a Language for a Numerical Analysis Problem Solving System"

[ISEAM 1967] (1967) ACM Symposium on "Interactive Systems for Experimental Applied Mathematics", editors Klerer and Reinfelds, Washington, D.C., August 1967  

Languages mentioned NAPSS {1965} Non-procedural language for solving mathematical problems