%0 Journal Article
%A J. Nečas
%T An approximate method for finding the critical points of even functionals
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1975
%P 235-239
%V 134
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1975_134_a15/
%G ru
%F TM_1975_134_a15