%0 Journal Article %A S. S. Goncharov %A J. F. Knight %T Computable Structure and Non-Structure Theorems %J Algebra i logika %D 2002 %P 639-681 %V 41 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2002_41_6_a0/ %G ru %F AL_2002_41_6_a0