%0 Journal Article
%A V. N. Zhigulev
%T The theory of the “return” layer
%J Doklady Akademii Nauk
%D 1960
%P 1313-1316
%V 134
%N 6
%U http://geodesic.mathdoc.fr/item/DAN_1960_134_6_a12/
%G ru
%F DAN_1960_134_6_a12