%0 Journal Article %A N. M. Korobov %T Double trigonometric sums and their application in approximating rational sums %J Matematičeskie zametki %D 1969 %P 25-34 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1969_6_1_a3/ %G ru %F MZM_1969_6_1_a3