@article{TRSPY_1964_73_a5,
     author = {A. V. Ivanov},
     title = {On a~class of functions},
     journal = {Informatics and Automation},
     pages = {159--171},
     publisher = {mathdoc},
     volume = {73},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1964_73_a5/}
}