%0 Journal Article %A I. V. Elistratov %T Estimates of remainder terms in the theory of perturbed Dirichlet characters %J Matematičeskie zametki %D 1978 %P 505-514 %V 23 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1978_23_4_a1/ %G ru %F MZM_1978_23_4_a1