%0 Journal Article
%A A. F. Shapkin
%T On nondetermined methods of solving Poisson’s equation optimal on function classes
%J Doklady Akademii Nauk
%D 1969
%P 744-747
%V 189
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_189_4_a13/
%G ru
%F DAN_1969_189_4_a13