%0 Journal Article
%A V. P. Shapeev
%T Intermediate integrals of a second-order partial differential
%J Doklady Akademii Nauk
%D 1984
%P 1339-1343
%V 276
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1984_276_6_a14/
%G ru
%F DAN_1984_276_6_a14