TY - JOUR AU - V. B. Tlyachev AU - A. D. Ushkho AU - D. S. Ushkho TI - On periodic solutions of Rayleigh equation JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2021 SP - 173 EP - 181 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2021_21_2_a3/ LA - ru ID - ISU_2021_21_2_a3 ER -