TY - JOUR AU - K. V. Pankrashin TI - Locality of Quadratic Forms for Point Perturbations of Schr\"odinger Operators JO - Matematičeskie zametki PY - 2001 SP - 425 EP - 433 VL - 70 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2001_70_3_a9/ LA - ru ID - MZM_2001_70_3_a9 ER -