TY - JOUR AU - D. I. Borisov TI - On spectral gaps of a Laplacian in a strip with a bounded periodic perturbation JO - Ufa mathematical journal PY - 2018 SP - 14 EP - 30 VL - 10 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UFA_2018_10_2_a1/ LA - en ID - UFA_2018_10_2_a1 ER -