%0 Journal Article %A Lavrič, Boris %T The nil radical of an Archimedean partially ordered ring with positive squares %J Commentationes Mathematicae Universitatis Carolinae %D 1994 %P 231-238 %V 35 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1994__35_2_a2/ %G en %F CMUC_1994__35_2_a2