@Article{ 
  AbaBia16,
  author = { Abate, Marco and Bianchi, Fabrizio },
  title = { A Poincaré-Bendixson theorem for meromorphic connections on Riemann
  surfaces },
  journal = { Math. Z. },
  year = { 2016 },
  doi = { 10.1007/s00209-015-1540-6 },
  volume = { 282 },
  number = { 1-2 },
  pages = { 247-272 },
  URL = { https://gecogedi.dimai.unifi.it/paper/68/ },
  note = { cvgmt preprint}
}