TY - JOUR AU - V. F. Butuzov TI - On periodic solutions to singularly perturbed parabolic problems in the case of multiple roots of the degenerate equation JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 2011 SP - 44 EP - 55 VL - 51 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_2011_51_1_a3/ LA - ru ID - ZVMMF_2011_51_1_a3 ER -