TY - JOUR AU - V. V. Yevstafyeva TI - Criterion for the Existence of Two-Point Oscillatory Solution of a Perturbed System with a Relay JO - Matematičeskie zametki PY - 2023 SP - 260 EP - 273 VL - 114 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2023_114_2_a7/ LA - ru ID - MZM_2023_114_2_a7 ER -