PDEL-A Language for Partial Differential Equations
Conventional computer methods available to solve
continuous system problems characterized by partial
differential equations are very time-consuming and cumbersome.  A
convenient, easy to learn and to use, high level problem oriented
language to solve and study partial differential equation problems
has been designed; a practical translator for the language has also
been designed, and a working version of it has been constructed
for a significant portion of the language.  This Partial Differential
Equation Language, PDEL, is outlined, and the highlights
of the translator are briefly summarized.
CACM March, 1970
Cardenas, A. F.
Karplus, W. J.
