@article{GDZPPN002063492,
title = {Area preserving twist homeomorphism of the annulus.},
journal = {Commentarii mathematici Helvetici},
volume = {54},
year = {1979},
pages = {397-404},
zbl = {0414.57002},
url = {http://dml.mathdoc.fr/item/GDZPPN002063492}
}
Mather, John N. Area preserving twist homeomorphism of the annulus.. Commentarii mathematici Helvetici, Tome 54 (1979) pp. 397-404. http://gdmltest.u-ga.fr/item/GDZPPN002063492/