TY - JOUR AU - V. F. Butuzov AU - N. N. Nefedov TI - A singularly perturbed boundary value problem for a second-order equation in the case of variation of stability JO - Matematičeskie zametki PY - 1998 SP - 354 EP - 362 VL - 63 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1998_63_3_a3/ LA - ru ID - MZM_1998_63_3_a3 ER -