TY - JOUR AU - G. T. Gegelia TI - On bounded and periodic solutions of even-order nonlinear ordinary differential equations JO - Differencialʹnye uravneniâ PY - 1986 SP - 390 EP - 396 VL - 22 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1986_22_3_a2/ LA - ru ID - DE_1986_22_3_a2 ER -