%0 Journal Article %A N. N. Ural'tseva %T Nonlinear boundary value problems for equations of minimal surface type %J Informatics and Automation %D 1971 %P 217-226 %V 116 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1971_116_a13/ %G ru %F TRSPY_1971_116_a13