%0 Journal Article %A S. I. Pokhozhaev %T On classes of positivity of elliptic operators in $\mathbf{R}^N$ with a supercritical nonlinearity index %J Doklady Akademii Nauk %D 1990 %P 558-561 %V 314 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_314_3_a9/ %G ru %F DAN_1990_314_3_a9