Mizzi, F. and P. Toussaint: "PHYSICTRAN: A Programming Language for Physicists, Economists, and Engineers Extending the Possibilities of Fortran V in Automatic Solving" p364-369

(1971)

Freiman, C. (1971) Freiman, C. V. et al (Ed) Information Processing 71, Proceedings of IFIP Congress 71, Ljubljana, Yugoslavia, August 23-28, 1971  

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