%0 Journal Article %A A. G. Megrabov %T A group approach to inverse problems for differential equations %J Doklady Akademii Nauk %D 1984 %P 583-586 %V 275 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a16/ %G ru %F DAN_1984_275_3_a16