%0 Journal Article %A P. L. Gurevich %T Elliptic problems with nonlocal boundary conditions and Feller semigroups %J Contemporary Mathematics. Fundamental Directions %D 2010 %P 3-173 %V 38 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2010_38_a0/ %G ru %F CMFD_2010_38_a0