@Article{ 
  GalSab15a,
  author = { Gal, Sorin Gheorghe and Sabadini, Irene },
  title = { Universality properties of the quaternionic power series and entire functions },
  journal = { Math. Nachr. },
  year = { 2015 },
  doi = { 10.1002/mana.201400081 },
  volume = { 288 },
  number = { 8-9 },
  pages = { 917-924 },
  URL = { https://gecogedi.dimai.unifi.it/paper/139/ },
  note = { cvgmt preprint}
}