@article{VMUMM_2013_1_a10,
     author = {A. V. Kochergin},
     title = {Depth of functions of $k$-valued logic in finite bases},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {56--59},
     year = {2013},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2013_1_a10/}
}