@article{Valcarce:2013BY,
  author = "Valcarce, Alfredo  and  Fernández Caramés, Teresa  and  Vijande, Javier",
  title = "{Too many $X's$, $Y's$ and $Z's$?}",
  doi = "10.22323/1.171.0152",
  journal = "PoS",
  year = 2013,
  volume = "Confinement X",
  pages = "152"
}