%0 Journal Article %A S. V. Bochkarev %T On a~method for estimating the $L_1$-norm of an exponential sum %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1997 %P 74-76 %V 218 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1997_218_a4/ %G ru %F TM_1997_218_a4