%0 Journal Article %A A. Kh. Ghiyasi %T Constants in inequalities for mean values of some periodic arithmetic functions %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2008 %P 44-48 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2008_6_a7/ %G ru %F VMUMM_2008_6_a7