TY - JOUR AU - D. A. Tursunov TI - Asymptotic expansion for a solution of an ordinary second-order differential equation with three turning points JO - Trudy Instituta matematiki i mehaniki PY - 2016 SP - 271 EP - 281 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMM_2016_22_1_a26/ LA - ru ID - TIMM_2016_22_1_a26 ER -