%0 Journal Article %A V. A. Sharafutdinov %T A problem of integral geometry for tensor fields, and St.~Venant's equation %J Doklady Akademii Nauk %D 1981 %P 1066-1069 %V 261 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_261_5_a9/ %G ru %F DAN_1981_261_5_a9