@article{TRSPY_1970_113_a5,
     author = {V. A. Shurygin},
     title = {Constructive sets with an equality and their mappings},
     journal = {Informatics and Automation},
     pages = {173--259},
     publisher = {mathdoc},
     volume = {113},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1970_113_a5/}
}