TY - JOUR AU - V. A. Il'in TI - Some properties of a~regular solution of the Helmholtz equation in a~two-dimensional domain JO - Matematičeskie zametki PY - 1974 SP - 885 EP - 890 VL - 15 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1974_15_6_a6/ LA - ru ID - MZM_1974_15_6_a6 ER -