TY - JOUR AU - M. G. Peretyat'kin TI - Analogues of Rice's theorem for semantic classes of JO - Algebra i logika PY - 1991 SP - 517 EP - 539 VL - 30 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1991_30_5_a1/ LA - ru ID - AL_1991_30_5_a1 ER -