%0 Journal Article %A M. N. Feller %T Infinite-dimensional elliptic equations and operators of L\'evy type %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1986 %P 119-170 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1986_41_4_a2/ %G en %F RM_1986_41_4_a2