@article{01590724, title = {Getting rid of the negative Schwarzian derivative condition.}, journal = {Annals of Mathematics. Second Series}, volume = {151}, year = {2000}, pages = {743-762}, doi = {10.2307/2661353}, zbl = {0988.37044}, language = {en}, url = {http://dml.mathdoc.fr/item/01590724} }
Kozlovski, O.S. Getting rid of the negative Schwarzian derivative condition.. Annals of Mathematics. Second Series, Tome 151 (2000) pp. 743-762. doi : 10.2307/2661353. http://gdmltest.u-ga.fr/item/01590724/