TY - JOUR AU - V. Solonnikov TI - Linear differential equations with a small parameter in the highest derivative term JO - Doklady Akademii Nauk PY - 1958 SP - 454 EP - 457 VL - 119 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1958_119_3_a13/ LA - ru ID - DAN_1958_119_3_a13 ER -