%0 Journal Article %A Yu. G. Shondin %T Semibounded local hamiltonians for perturbations of the laplacian supported by curves with angle points in $\mathbb R^4$ %J Teoretičeskaâ i matematičeskaâ fizika %D 1996 %P 179-199 %V 106 %N 2 %U http://geodesic.mathdoc.fr/item/TMF_1996_106_2_a0/ %G ru %F TMF_1996_106_2_a0