%0 Journal Article %A A. D. Iskenderov %T Variational formulations of multidimensional inverse problems of %J Doklady Akademii Nauk %D 1984 %P 531-533 %V 274 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_274_3_a3/ %G ru %F DAN_1984_274_3_a3