TY - JOUR AU - Yu. P. Chuburin TI - On the Schr\"odinger operator with a small potential in the case of a crystal film JO - Matematičeskie zametki PY - 1992 SP - 138 EP - 143 VL - 52 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1992_52_2_a15/ LA - ru ID - MZM_1992_52_2_a15 ER -