@article{UZKU_2014_156_3_a9,
     author = {D. K. Podolko},
     title = {On the closed classes of $k$-valued logic functions taking no more than three values},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {98--109},
     publisher = {mathdoc},
     volume = {156},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2014_156_3_a9/}
}