@article{1250283834, author = {Asaoka, Masayuki}, title = {Area preserving monotone twist diffeomorphisms without non-Birkhoff periodic points}, journal = {J. Math. Kyoto Univ.}, volume = {42}, number = {4}, year = {2002}, pages = { 703-714}, language = {en}, url = {http://dml.mathdoc.fr/item/1250283834} }
Asaoka, Masayuki. Area preserving monotone twist diffeomorphisms without non-Birkhoff periodic points. J. Math. Kyoto Univ., Tome 42 (2002) no. 4, pp. 703-714. http://gdmltest.u-ga.fr/item/1250283834/