@inproceedings{Faraggi:2016uv,
  author = "Faraggi, A.  and  Rizos, Ioannis",
  title = "{Spinor-vector duality and light Z’ in heterotic strings}",
  doi = "10.22323/1.258.0043",
  booktitle = "Proceedings of 18th International Conference From the Planck Scale to the Electroweak Scale  {\textemdash} PoS(PLANCK 2015)",
  year = 2016,
  volume = "258",
  pages = "043"
}