TY - JOUR AU - R. R. Shagidullin TI - Axiomatizability of a projection of a universally axiomatizable class of algebraic systems JO - Issledovaniya po Prikladnoi Matematike i Informatike PY - 1973 SP - 23 EP - 27 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KUIPM_1973_a2/ LA - ru ID - KUIPM_1973_a2 ER -