%0 Journal Article
%A A. V. Bitsadze
%A V. S. Vinogradov
%A A. A. Dezin
%A V. A. Il'in
%T Partial differential equations
%J Informatics and Automation
%D 1987
%P 259-299
%V 176
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1987_176_a10/
%G ru
%F TRSPY_1987_176_a10