%0 Journal Article
%A A. N. Leznov
%A V. G. Smirnov
%A A. B. Shabat
%T The~group of internal symmetries and the conditions of integrability of two-dimensional dynamical systems
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1982
%P 10-21
%V 51
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1982_51_1_a1/
%G ru
%F TMF_1982_51_1_a1