@article{TRSPY_1970_113_a4,
     author = {G. S. Tseitin},
     title = {The upper bounds of enumerable sets of constructive real numbers},
     journal = {Informatics and Automation},
     pages = {102--172},
     publisher = {mathdoc},
     volume = {113},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1970_113_a4/}
}