@article{IVM_1981_5_a6,
     author = {A. N. Degtev},
     title = {Relations between complete sets},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {50--55},
     publisher = {mathdoc},
     number = {5},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1981_5_a6/}
}