%0 Journal Article %A M. M. Arslanov %T Two theorems on recursively enumerable sets %J Algebra i logika %D 1968 %P 4-8 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1968_7_3_a0/ %G ru %F AL_1968_7_3_a0