TY - JOUR AU - A. G. Chshiev TI - The Gearhart--Pr\"uss Theorem for a Class of Degenerate Semigroups of Operators JO - Matematičeskie zametki PY - 2013 SP - 426 EP - 440 VL - 94 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2013_94_3_a9/ LA - ru ID - MZM_2013_94_3_a9 ER -