%0 Journal Article
%A A. V. Bitsadze
%T Equations of mixed type in three-dimensional regions
%J Doklady Akademii Nauk
%D 1962
%P 1017-1019
%V 143
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_143_5_a2/
%G ru
%F DAN_1962_143_5_a2