%0 Journal Article
%A R. Pirov
%T On some overdetermined systems of three differential equations in second-order partial derivatives
%J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki
%D 2016
%P 544-556
%V 158
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZKU_2016_158_4_a6/
%G ru
%F UZKU_2016_158_4_a6