@article{IVM_1981_11_a10,
     author = {N. R. Bukharaev},
     title = {{\it {{\CYRR}-{\cyrg}-}simple} sets, {\it {{\CYRF}{\CYRM}}} sets and their degrees of unsolvability},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {69--71},
     publisher = {mathdoc},
     number = {11},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1981_11_a10/}
}