@article{GDZPPN002028727, title = {R-and T-Groupoids: A Generalization of Groups.}, journal = {Aequationes mathematicae}, volume = {13}, year = {1975}, pages = {242-248}, url = {http://dml.mathdoc.fr/item/GDZPPN002028727} }
Taylor, M.A. R-and T-Groupoids: A Generalization of Groups.. Aequationes mathematicae, Tome 13 (1975) pp. 242-248. http://gdmltest.u-ga.fr/item/GDZPPN002028727/