%0 Journal Article %A I. Kametaka %A O. A. Oleinik %T On the asymptotic properties and necessary conditions for existence of solutions of nonlinear second order elliptic equations %J Sbornik. Mathematics %D 1979 %P 823-849 %V 35 %N 6 %U http://geodesic.mathdoc.fr/item/SM_1979_35_6_a3/ %G en %F SM_1979_35_6_a3