%0 Journal Article %A M. V. Borsuk %T A~priori estimates and solvability of second order quasilinear elliptic equations in a~composite domain with nonlinear boundary condition and conjugacy condition %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1968 %P 15-50 %V 103 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1968_103_a2/ %G ru %F TM_1968_103_a2