Voir la notice de l'article provenant de la source Heldermann Verlag
@article{JLT_1994_4_1_a1, author = {J. D. Lawson}, title = {Maximal {Ol'shanskii} {Semigroups}}, journal = {Journal of Lie theory}, pages = {017--03}, publisher = {mathdoc}, volume = {4}, number = {1}, year = {1994}, url = {http://geodesic.mathdoc.fr/item/JLT_1994_4_1_a1/} }
J. D. Lawson. Maximal Ol'shanskii Semigroups. Journal of Lie theory, Tome 4 (1994) no. 1, pp. 017-03. http://geodesic.mathdoc.fr/item/JLT_1994_4_1_a1/