%0 Journal Article %A P. N. Sorokin %T Mean-value theorem of I.\,M.~Vinogradov for a trigonometric sum over Gaussian numbers %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2007 %P 63-65 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2007_6_a12/ %G ru %F VMUMM_2007_6_a12