TY - JOUR AU - D. I. Borisov TI - Gaps in the spectrum of the Laplacian in a band with periodic delta interaction JO - Trudy Instituta matematiki i mehaniki PY - 2018 SP - 46 EP - 53 VL - 24 IS - 2 UR - http://geodesic.mathdoc.fr/item/TIMM_2018_24_2_a5/ LA - ru ID - TIMM_2018_24_2_a5 ER -