%0 Journal Article %A Keedwell, A. D. %T When is it hard to show that a quasigroup is a loop? %J Commentationes Mathematicae Universitatis Carolinae %D 2008 %P 241-247 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2008__49_2_a5/ %G en %F CMUC_2008__49_2_a5