%0 Journal Article %A È. Mukhamadiev %A B. N. Sadovskii %T An estimate for the spectral radius of an operator associated with an equation of neutral type %J Matematičeskie zametki %D 1973 %P 67-78 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1973_13_1_a7/ %G ru %F MZM_1973_13_1_a7