%0 Journal Article
%A A. P. Oskolkov
%T Prior estimates of first derivatives for two-dimensional linear strongly elliptic systems and elliptic mappings
%J Informatics and Automation
%D 1966
%P 182-191
%V 92
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1966_92_a11/
%G ru
%F TRSPY_1966_92_a11