TY - JOUR AU - V. L. Murskii TI - On the proportion of closed classes without a finite basis of identities JO - Doklady Akademii Nauk PY - 1987 SP - 1054 EP - 1057 VL - 293 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1987_293_5_a6/ LA - ru ID - DAN_1987_293_5_a6 ER -