TY - JOUR AU - V. E. Novikov TI - Set-theoretical approach to the structure of concept generators JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2009 SP - 50 EP - 56 VL - 9 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2009_9_3_a8/ LA - ru ID - ISU_2009_9_3_a8 ER -