@Article{ 
  FaGeGiSeSt16,
  author = { Farouki, Rida Taji and Gentili, Graziano and Giannelli, Carlotta and Sestini, Alessandra and Stoppato, Caterina },
  title = { Solution of a quadratic quaternion equation with mixed coefficients },
  journal = { J. Symbolic Comput. },
  year = { 2016 },
  doi = { 10.1016/j.jsc.2015.06.007 },
  volume = { 74 },
  pages = { 140-151 },
  URL = { https://gecogedi.dimai.unifi.it/paper/143/ },
  note = { cvgmt preprint}
}