%0 Journal Article
%A M. B. Sheftel
%T Group analysis of defining equations~-- a method for finding recursion operators
%J Differencialʹnye uravneniâ
%D 1994
%P 444-456
%V 30
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1994_30_3_a11/
%G ru
%F DE_1994_30_3_a11