@article{articled447c3c1,
title   = {A Poincaré–Birkhoff theorem for tight Reeb flows on S3},
author = {Hryniewicz, Umberto L and Momin, Al and Salomão, Pedro Antônio Santoro},
year = {2015},
doi = {10.1007/s00222-014-0515-2},
journal   = {Inventiones mathematicae}
}