%0 Journal Article
%A A. S. Semchankau
%T On Differences of Multiplicative Functions and Solutions of the Equation $n-\varphi(n)=c$
%J Matematičeskie zametki
%D 2021
%P 608-615
%V 109
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2021_109_4_a11/
%G ru
%F MZM_2021_109_4_a11