@article{IVM_1960_2_a21,
     author = {V. A. Uspenskii},
     title = {On the relation between various systems of constructive real numbers},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {199--208},
     publisher = {mathdoc},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1960_2_a21/}
}