%0 Journal Article
%A P. I. Lizorkin
%T The Green's $E$-function of a Beltrami operator and some variational problems
%J Doklady Akademii Nauk
%D 1961
%P 1052-1055
%V 139
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a5/
%G ru
%F DAN_1961_139_5_a5