%0 Journal Article %A M.A. Taylor %T R-and T-Groupoids: A Generalization of Groups. (Short Communication). %J Aequationes mathematicae %D 1974 %P 318-319 %V 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1974__11_136473/ %F AM2_1974__11_136473