%0 Journal Article
%A A. A. Kosmodem'yanskii (Jr.)
%T Sufficient conditions for the concavity of the solution of the dirichlet problem for the equation $\Delta u=-1$
%J Matematičeskie zametki
%D 1987
%P 537-542
%V 42
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1987_42_4_a5/
%G ru
%F MZM_1987_42_4_a5