@article{ZNSL_1979_88_a17,
     author = {N. A. Shanin},
     title = {On canonical recursive functions and operations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {218--235},
     publisher = {mathdoc},
     volume = {88},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_88_a17/}
}