@article{SF_1976__13_134209, author = {G. Szeto}, title = {A construction of right groups from a connected groupoid.}, journal = {Semigroup forum}, pages = {185--186}, publisher = {mathdoc}, volume = {13}, year = {1976}, zbl = {0359.20060}, url = {http://geodesic.mathdoc.fr/item/SF_1976__13_134209/} }