%0 Journal Article %A B. S. Pavlov %T Boundary conditions on thin manifolds and the semiboundedness of the three-particle Schr\"odinger operator with pointwise potential %J Sbornik. Mathematics %D 1989 %P 161-175 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1989_64_1_a9/ %G en %F SM_1989_64_1_a9