Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2005_19_3-4_a12, author = {Kalcho Todorov and Ilinka Dimitrova}, title = {On {Some} {Maximal} {Subsemigroups} of the {Symmetric} {Semigroup}}, journal = {Mathematica balkanica}, pages = {427}, publisher = {mathdoc}, volume = {19}, number = {3-4}, year = {2005}, url = {http://geodesic.mathdoc.fr/item/MABA_2005_19_3-4_a12/} }
Kalcho Todorov; Ilinka Dimitrova. On Some Maximal Subsemigroups of the Symmetric Semigroup. Mathematica balkanica, Tome 19 (2005) no. 3-4, p. 427. http://geodesic.mathdoc.fr/item/MABA_2005_19_3-4_a12/