Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1985__60_140003, author = {John N. Mather}, title = {Commutators of diffeomorphisms, {III:} a group which is not perfect.}, journal = {Commentarii mathematici Helvetici}, pages = {122--124}, publisher = {mathdoc}, volume = {60}, year = {1985}, zbl = {0575.58011}, url = {http://geodesic.mathdoc.fr/item/CMH_1985__60_140003/} }
John N. Mather. Commutators of diffeomorphisms, III: a group which is not perfect.. Commentarii mathematici Helvetici, Tome 60 (1985), pp. 122-124. http://geodesic.mathdoc.fr/item/CMH_1985__60_140003/