%0 Journal Article %A R. B. Akhtyamov %T Some remarks on the index sets of canonical recursively enumerable families of finite sets %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1989 %P 3-6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1989_2_a0/ %G ru %F IVM_1989_2_a0