Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1978__19_3_a1, author = {Sullivan, Robert P.}, title = {Ideals in transformation semigroups}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {431--446}, publisher = {mathdoc}, volume = {19}, number = {3}, year = {1978}, mrnumber = {508952}, zbl = {0399.20056}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1978__19_3_a1/} }
Sullivan, Robert P. Ideals in transformation semigroups. Commentationes Mathematicae Universitatis Carolinae, Tome 19 (1978) no. 3, pp. 431-446. http://geodesic.mathdoc.fr/item/CMUC_1978__19_3_a1/