@article{CMFD_2018_64_4_a4,
     author = {I. A. Ikromov and S. E. Usmanov},
     title = {On boundedness of maximal operators associated with hypersurfaces},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {650--681},
     publisher = {mathdoc},
     volume = {64},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2018_64_4_a4/}
}