%0 Journal Article %A A. V. Ivanov %T A priori estimates of the second derivatives of solutions to nonlinear second-order equations on the boundary of the domain %J Zapiski Nauchnykh Seminarov POMI %D 1977 %P 65-76 %V 69 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1977_69_a4/ %G ru %F ZNSL_1977_69_a4