@article{CHEB_2009_10_2_a3,
     author = {I. V. Denisov},
     title = {On some classes of functions},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {79--108},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2009_10_2_a3/}
}