TY - JOUR AU - G. I. Shishkin TI - The numerical solution of elliptic equations with a small parameter at the leading derivatives JO - Doklady Akademii Nauk PY - 1979 SP - 804 EP - 808 VL - 245 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1979_245_4_a9/ LA - ru ID - DAN_1979_245_4_a9 ER -