@article{DAN_1973_210_2_a7,
     author = {Yu. D. Strigin},
     title = {The hierarchy of general recursive functionals},
     journal = {Doklady Akademii Nauk},
     pages = {282--284},
     publisher = {mathdoc},
     volume = {210},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a7/}
}