Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1973__23_1_a2, author = {Pond\v{e}l{\'\i}\v{c}ek, Bed\v{r}ich}, title = {A {Note} on {Radicals} of {Semigroups}}, journal = {Mathematica slovaca}, pages = {14--16}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1973}, mrnumber = {0327954}, zbl = {0253.20084}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1973__23_1_a2/} }
Pondělíček, Bedřich. A Note on Radicals of Semigroups. Mathematica slovaca, Tome 23 (1973) no. 1, pp. 14-16. http://geodesic.mathdoc.fr/item/MASLO_1973__23_1_a2/