TY - JOUR AU - V. N. Pyvovarchyk TI - The spectrum of quadratic operator pencils in the right half-plane JO - Matematičeskie zametki PY - 1989 SP - 101 EP - 103 VL - 45 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1989_45_6_a13/ LA - ru ID - MZM_1989_45_6_a13 ER -