Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1981__31_4_a4, author = {Kme\v{t}, Franti\v{s}ek}, title = {On radicals of the semigroup of triangular matrices}, journal = {Mathematica slovaca}, pages = {365--368}, publisher = {mathdoc}, volume = {31}, number = {4}, year = {1981}, mrnumber = {637965}, zbl = {0473.20042}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1981__31_4_a4/} }
Kmeť, František. On radicals of the semigroup of triangular matrices. Mathematica slovaca, Tome 31 (1981) no. 4, pp. 365-368. http://geodesic.mathdoc.fr/item/MASLO_1981__31_4_a4/