TY - JOUR AU - I. Kachkovskii AU - N. D. Filonov TI - Absolute continuity of the spectrum of the periodic Schr\"odinger operator in a cylinder with Robin boundary condition JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2020 SP - 48 EP - 57 VL - 54 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2020_54_2_a3/ LA - ru ID - FAA_2020_54_2_a3 ER -