%0 Journal Article %A M. G. Peretyat'kin %T Analogues of Rice's theorem for semantic classes of %J Algebra i logika %D 1991 %P 517-539 %V 30 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1991_30_5_a1/ %G ru %F AL_1991_30_5_a1