%0 Journal Article %A L. V. Varukhina %T Selected questions of the theory of adding functions of Dirichlet series %J Čebyševskij sbornik %D 2019 %P 55-81 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHEB_2019_20_2_a4/ %G ru %F CHEB_2019_20_2_a4