%0 Journal Article
%A P. A. Frolov
%T Topological structure of elliptic boundary problems in space
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1984
%P 81-82
%V 18
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1984_18_2_a19/
%G ru
%F FAA_1984_18_2_a19