TY - JOUR AU - È. A. Polyanskii TI - On estimates of the solution of the Helmholtz equation in a plane waveguide JO - Doklady Akademii Nauk PY - 1979 SP - 71 EP - 74 VL - 245 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1979_245_1_a17/ LA - ru ID - DAN_1979_245_1_a17 ER -