TY - JOUR AU - V. E. Nomofilov TI - Asymptotic solutions of the second order system of differential equations concentrated in a vicinity of a ray JO - Zapiski Nauchnykh Seminarov POMI PY - 1981 SP - 170 EP - 179 VL - 104 UR - http://geodesic.mathdoc.fr/item/ZNSL_1981_104_a16/ LA - ru ID - ZNSL_1981_104_a16 ER -