Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{AUCMP_1975__16_2_a5, author = {Kepka, Tom\'a\v{s}}, title = {$\Lambda$, $R$-transitive groupoids}, journal = {Acta Universitatis Carolinae. Mathematica et Physica}, pages = {71--77}, publisher = {mathdoc}, volume = {16}, number = {2}, year = {1975}, mrnumber = {0390117}, zbl = {0319.20065}, language = {en}, url = {https://geodesic-test.mathdoc.fr/item/AUCMP_1975__16_2_a5/} }
Kepka, Tomáš. $\Lambda$, $R$-transitive groupoids. Acta Universitatis Carolinae. Mathematica et Physica, Tome 16 (1975) no. 2, pp. 71-77. https://geodesic-test.mathdoc.fr/item/AUCMP_1975__16_2_a5/