@article{IIGUM_2013_6_3_a4,
     author = {V. B. Larionov},
     title = {Criterion of existance of infinite substructure for some classes of monotone $k$-valued functions},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {60--71},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2013_6_3_a4/}
}