@article{ITVS_2018_4_a9,
     author = {B. M. Gavrikov and N. V. Pestryakova and R. V. Stavitskii},
     title = {On the properties of learning sets},
     journal = {Informacionnye tehnologii i vy\v{c}islitelnye sistemy},
     pages = {97--107},
     publisher = {mathdoc},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ITVS_2018_4_a9/}
}