@article{DAN_1968_183_6_a6,
     author = {E. A. Polyakov},
     title = {Recursive subsets of sets of recursive functions},
     journal = {Doklady Akademii Nauk},
     pages = {1262--1264},
     publisher = {mathdoc},
     volume = {183},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_183_6_a6/}
}