@Article{ 
  colsabstr00,
  author = { Colombo, Fabrizio and Sabadini, Irene and Struppa, Daniele },
  title = { Dirac equation in the octonionic algebra },
  journal = { Contemporary Mathematics A.M.S. },
  year = { 2000 },
  volume = { 251 },
  pages = { 117-134 },
  URL = { http://cvgmt.sns.it/paper/135/ },
  note = { cvgmt preprint}
}