TY - JOUR AU - E. V. Desyaev AU - P. A. Shamanaev TI - On periodic solutions of linear inhomogeneous differential equations with a small perturbation at the derivative JO - Žurnal Srednevolžskogo matematičeskogo obŝestva PY - 2023 SP - 111 EP - 122 VL - 25 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SVMO_2023_25_3_a0/ LA - ru ID - SVMO_2023_25_3_a0 ER -