@article{DAN_1961_140_1_a12,
     author = {N. M. Nagornyi},
     title = {The realization of functions in alphabets by algorithms of certain classes},
     journal = {Doklady Akademii Nauk},
     pages = {52--55},
     publisher = {mathdoc},
     volume = {140},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a12/}
}