%0 Journal Article %A D. Sh. Devadze %A V. Sh. Beridze %T Optimality conditions for quasi-linear differential equations with non-local boundary conditions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2013 %P 773-775 %V 68 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2013_68_4_a5/ %G en %F RM_2013_68_4_a5