%0 Journal Article %A A. A. Karatsuba %T Estimates of trigonometric sums of a special form, and their applications %J Doklady Akademii Nauk %D 1961 %P 513-514 %V 137 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_137_3_a5/ %G ru %F DAN_1961_137_3_a5