@Misc{ 
  San16,
  author = { Santi, Andrea },
  title = { Almost CR quaternionic manifolds and their immersibility in HP^n },
  journal = { Abh. Math. Semin. Univ. Hambg. },
  year = { 2017 },
  doi = { 10.1007/s12188-016-0136-3 },
  volume = { 87 },
  number = { 1 },
  pages = { 83-103 },
  URL = { https://gecogedi.dimai.unifi.it/paper/30/ },
  note = { cvgmt preprint}
}