TY - JOUR AU - A. I. Stukachev TI - $\Sigma$-Admissible Families over Linear Orders JO - Algebra i logika PY - 2002 SP - 228 EP - 252 VL - 41 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_2002_41_2_a7/ LA - ru ID - AL_2002_41_2_a7 ER -