%0 Journal Article
%A D. B. Kikin
%T Extremal properties of the solutions of certain classes of second-order partial differential equations and their applications to gas flows
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1963
%P 56-58
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1963_5_a8/
%G ru
%F IVM_1963_5_a8