= Variational methods for the solution of problems of equilibrium and vibrations by Richard Courant
{c}
{tag=Work by Richard Courant}
{title2=1943}
https://doi.org/10.1090/S0002-9904-1943-07818-4
Bulletin of the American Mathematical Society 49(1), 1–23. Primary PDF: https://www.ams.org/bull/1943-49-01/S0002-9904-1943-07818-4/S0002-9904-1943-07818-4.pdf . Cited for variational approximation by finite-parameter trial functions, including piecewise-linear constructions; no claim that Courant alone originated every finite-element method. Direct PDF access returned 403.
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