%0 Journal Article %A V. E. Novikov %T Set-theoretical approach to the structure of concept generators %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2009 %P 50-56 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2009_9_3_a8/ %G ru %F ISU_2009_9_3_a8