TY - JOUR AU - A. S. Silbergleit AU - Ju. I. Kopilevich TI - On the dispersion curves of waveguide systems that are connected with quadratic operator pencils JO - Doklady Akademii Nauk PY - 1981 SP - 1345 EP - 1349 VL - 259 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1981_259_6_a16/ LA - ru ID - DAN_1981_259_6_a16 ER -