Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1955__5_1_a1, author = {\v{S}ulka, Robert}, title = {Topologick\'e grupoidy}, journal = {Mathematica slovaca}, pages = {10--21}, publisher = {mathdoc}, volume = {05}, number = {1}, year = {1955}, mrnumber = {0069189}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/MASLO_1955__5_1_a1/} }
Šulka, Robert. Topologické grupoidy. Mathematica slovaca, Tome 05 (1955) no. 1, pp. 10-21. http://geodesic.mathdoc.fr/item/MASLO_1955__5_1_a1/