@article{GDZPPN002102005, title = {On the instability of Herman rings.}, journal = {Inventiones mathematicae}, volume = {82}, year = {1985}, pages = {459-472}, zbl = {0595.30032}, url = {http://dml.mathdoc.fr/item/GDZPPN002102005} }
Mané, Ricardo. On the instability of Herman rings.. Inventiones mathematicae, Tome 82 (1985) pp. 459-472. http://gdmltest.u-ga.fr/item/GDZPPN002102005/