%0 Journal Article %A D. A. Mit'kin %T On estimates and asymptotic formulas for rational trigonometric sums that are almost complete %J Sbornik. Mathematics %D 1985 %P 513-532 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1985_50_2_a12/ %G en %F SM_1985_50_2_a12