TY - JOUR AU - V. A. Beloshapko AU - V. F. Butuzov TI - Asymptotics of the solution to a singularly perturbed elliptic problem with a three-zone boundary layer JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 2016 SP - 1428 EP - 1440 VL - 56 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_2016_56_8_a5/ LA - ru ID - ZVMMF_2016_56_8_a5 ER -