%0 Journal Article %A R. H. Aminov %A B. G. Gabdulkhaev %T Approximate solution of the Ambartsumyan functional equation %J Doklady Akademii Nauk %D 1989 %P 322-325 %V 304 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_304_2_a14/ %G ru %F DAN_1989_304_2_a14