%0 Journal Article %A Gardner, B. J. %T Radicals which define factorization systems %J Commentationes Mathematicae Universitatis Carolinae %D 1991 %P 601-607 %V 32 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1991__32_4_a1/ %G en %F CMUC_1991__32_4_a1