TY - JOUR AU - A. S. Belov TI - Order estimates of the~modulus of variation of the~sum of a~lacunary trigonometric series JO - Sbornik. Mathematics PY - 1998 SP - 639 EP - 656 VL - 189 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1998_189_5_a0/ LA - en ID - SM_1998_189_5_a0 ER -