@article{Guzmán:2080,
      author        = "Guzmán, F. and  Badnell, N. R. and  Williams, R. J. R.
                       and  van Hoof, P. A. M. and  Chatzikos, M. and  Ferland, G.
                       J.",
      title         = "{H, He-like recombination spectra - I. l-changing
                       collisions for hydrogen}",
      year          = "2016",
}