@article{MZM_1969_6_1_a0,
     author = {V. A. Uspenskii},
     title = {Reduction of computable and potentially computable numerations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {3--9},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_1_a0/}
}