TY - JOUR AU - V. F. Butuzov AU - A. G. Nikitin TI - An angular boundary layer in the asymptotics of the solution of a singularly perturbed system of equations of elliptic type JO - Differencialʹnye uravneniâ PY - 1988 SP - 343 EP - 345 VL - 24 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1988_24_2_a20/ LA - ru ID - DE_1988_24_2_a20 ER -