TY - JOUR AU - I. A. Ikromov AU - S. E. Usmanov TI - On boundedness of maximal operators associated with hypersurfaces JO - Contemporary Mathematics. Fundamental Directions PY - 2018 SP - 650 EP - 681 VL - 64 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2018_64_4_a4/ LA - ru ID - CMFD_2018_64_4_a4 ER -