%0 Journal Article %A S. A. Budochkina %T Symmetries and first integrals of a second order evolutionary operator equation %J Eurasian mathematical journal %D 2012 %P 18-28 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2012_3_1_a1/ %G en %F EMJ_2012_3_1_a1