@article{SM_2018_209_4_a1,
     author = {A. B. Kalmynin},
     title = {On {Nov\'ak} numbers},
     journal = {Sbornik. Mathematics},
     pages = {491--502},
     publisher = {mathdoc},
     volume = {209},
     number = {4},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2018_209_4_a1/}
}