%0 Journal Article %A V. P. Dobritsa %T Local classes and computable indexings %J Algebra i logika %D 1987 %P 165-190 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1987_26_2_a2/ %G ru %F AL_1987_26_2_a2