TY - JOUR AU - Yu. V. Komlenko TI - Chaplygin's theorem for a second-order linear differential equation with retarded argument JO - Matematičeskie zametki PY - 1967 SP - 301 EP - 306 VL - 2 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1967_2_3_a8/ LA - ru ID - MZM_1967_2_3_a8 ER -