Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMJ_1999__49_2_a13, author = {Cho, Jung R. and Je\v{z}ek, Jaroslav and Kepka, Tom\'a\v{s}}, title = {Simple paramedial groupoids}, journal = {Czechoslovak Mathematical Journal}, pages = {391--399}, publisher = {mathdoc}, volume = {49}, number = {2}, year = {1999}, mrnumber = {1692520}, zbl = {0955.20044}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMJ_1999__49_2_a13/} }
Cho, Jung R.; Ježek, Jaroslav; Kepka, Tomáš. Simple paramedial groupoids. Czechoslovak Mathematical Journal, Tome 49 (1999) no. 2, pp. 391-399. http://geodesic.mathdoc.fr/item/CMJ_1999__49_2_a13/