Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{AUCMP_1981__22_1_a5, author = {Kepka, Tom\'a\v{s}}, title = {A note on subdirectly irreducible groupoids}, journal = {Acta Universitatis Carolinae. Mathematica et Physica}, pages = {25--28}, publisher = {mathdoc}, volume = {22}, number = {1}, year = {1981}, mrnumber = {0635974}, zbl = {0481.08001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AUCMP_1981__22_1_a5/} }
Kepka, Tomáš. A note on subdirectly irreducible groupoids. Acta Universitatis Carolinae. Mathematica et Physica, Tome 22 (1981) no. 1, pp. 25-28. http://geodesic.mathdoc.fr/item/AUCMP_1981__22_1_a5/