@Article{ 
  GenSarStr13,
  author = { Gentili, Graziano and Sarfatti, Giulia and Struppa, Daniele Carlo },
  title = { Ideals of regular functions of a quaternionic variable },
  journal = { Math. Res. Lett. },
  year = { 2016 },
  doi = { 10.4310/MRL.2016.v23.n6.a4 },
  volume = { 23 },
  number = { 6 },
  pages = { 1645-1663 },
  URL = { https://gecogedi.dimai.unifi.it/paper/123/ },
  note = { cvgmt preprint}
}