TY - JOUR AU - È. Mukhamadiev AU - B. N. Sadovskii TI - An estimate for the spectral radius of an operator associated with an equation of neutral type JO - Matematičeskie zametki PY - 1973 SP - 67 EP - 78 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1973_13_1_a7/ LA - ru ID - MZM_1973_13_1_a7 ER -