%0 Journal Article %A O. I. Trubina %T A priori estimation of the solution modulus for a certain class of Monge--Amp\`ere elliptic equations on a two-dimensional sphere %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1986 %P 76-79 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1986_5_a19/ %G ru %F VMUMM_1986_5_a19