TY - JOUR AU - S. V. Bochkarev TI - On a~method for estimating the $L_1$-norm of an exponential sum JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1997 SP - 74 EP - 76 VL - 218 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1997_218_a4/ LA - ru ID - TM_1997_218_a4 ER -