TY - JOUR AU - E. I. Moiseev TI - The Neumann problem for piece-wise smooth domains JO - Differencialʹnye uravneniâ PY - 1971 SP - 1655 EP - 1666 VL - 7 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_9_a12/ LA - ru ID - DE_1971_7_9_a12 ER -