%0 Journal Article
%A V. V. Volchkov
%T Injectivity sets for the Radon transform over a~sphere
%J Izvestiya. Mathematics 
%D 1999
%P 481-493
%V 63
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1999_63_3_a1/
%G en
%F IM2_1999_63_3_a1