%0 Journal Article
%A Michael Wiegner
%T On Two-Dimensional Elliptic Systems with a One-sided Condition.
%J Mathematische Zeitschrift
%D 1981
%P 493-500
%V 178
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1981__178_173118/
%F MZ_1981__178_173118