TY - JOUR AU - A. S. Il'inskii AU - A. G. Sveshnikov TI - A method for investigating non-regular wave guides with impedance conditions at the boundary JO - Doklady Akademii Nauk PY - 1967 SP - 255 EP - 258 VL - 176 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1967_176_2_a4/ LA - ru ID - DAN_1967_176_2_a4 ER -