%0 Journal Article
%A L. B. Zelenko
%T Friedrichs extension of some nonlinear operators
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1973
%P 83-84
%V 7
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a11/
%G ru
%F FAA_1973_7_4_a11