%0 Journal Article %A M. M. Arslanov %T Families of recursively enumerable sets and their degrees of unsolvability %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1985 %P 13-19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1985_4_a1/ %G ru %F IVM_1985_4_a1