@article{GDZPPN001251686, title = {A construction of right groups from a connected groupoid.}, journal = {Semigroup forum}, volume = {12}, year = {1976}, pages = {185-186}, zbl = {0359.20060}, url = {http://dml.mathdoc.fr/item/GDZPPN001251686} }
Szeto, G. A construction of right groups from a connected groupoid.. Semigroup forum, Tome 12 (1976) pp. 185-186. http://gdmltest.u-ga.fr/item/GDZPPN001251686/