@article{PerrottaHamannCristianietal.2018,
  author    = {S. Perrotta and F. Hamann and S. Cristiani and J. X. Prochaska and Sara L. Ellison and S. Lopez and G. Cupani and G. Becker and T. A. M. Berg and Lise Christensen and K. D. Denney and G{\´a}bor Worseck},
  title     = {Hunting for metals using XQ-100 Legacy Survey composite spectra},
  journal   = {Monthly notices of the Royal Astronomical Society},
  volume    = {481},
  number    = {1},
  pages     = {105 -- 121},
  doi       = {10.1093/mnras/sty2205},
  year      = {2018},
}