%0 Journal Article %A V. A. Sharafutdinov %T On the problem of emission tomography for nonhomogeneous media %J Doklady Akademii Nauk %D 1992 %P 446-448 %V 326 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1992_326_3_a11/ %G ru %F DAN_1992_326_3_a11