%0 Journal Article %A V. Ya. Yaroslavtseva %T A class of transformation operators and their applications to differential equations %J Doklady Akademii Nauk %D 1976 %P 816-819 %V 227 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_227_4_a10/ %G ru %F DAN_1976_227_4_a10