TY - JOUR AU - A. M. Minkin TI - A first-order boundary value problem with boundary condition on a countable set of points JO - Matematičeskie zametki PY - 1997 SP - 418 EP - 424 VL - 62 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1997_62_3_a9/ LA - ru ID - MZM_1997_62_3_a9 ER -