@article{TRSPY_1973_133_a21,
     author = {V. V. \v{S}kira},
     title = {Universal functions for certain classes of recursive functions and sets},
     journal = {Informatics and Automation},
     pages = {243--250},
     publisher = {mathdoc},
     volume = {133},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1973_133_a21/}
}