@article{FPM_2009_15_4_a6,
     author = {A. P. Sokolov},
     title = {On the constructive characterization of threshold functions},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {189--208},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2009_15_4_a6/}
}