Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1990__288_1_164721, author = {Norbert D\"orr}, title = {On {Ol'shanskii's} semigroup.}, journal = {Mathematische Annalen}, pages = {21--34}, publisher = {mathdoc}, volume = {288}, number = {1}, year = {1990}, zbl = {0694.22013}, url = {http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164721/} }
Norbert Dörr. On Ol'shanskii's semigroup.. Mathematische Annalen, Tome 288 (1990) no. 1, pp. 21-34. http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164721/