%0 Journal Article %A Ki Hang Kim %A Fred W. Roush %T A universal algebra approach to free projective planes. %J Aequationes mathematicae %D 1979 %P 48-52 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1979__19_136807/ %F AM2_1979__19_136807