@article{IVM_1985_4_a1,
     author = {M. M. Arslanov},
     title = {Families of recursively enumerable sets and their degrees of unsolvability},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {13--19},
     publisher = {mathdoc},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_4_a1/}
}