@article{vanHoof:4801,
      author        = "van Hoof, P. A. M. and Van de Steene, G. C. and Guzmán,
                       F. and Dehghanian, M. and Chatzikos, M. and Ferland, G. J.",
      title         = "{Current and future development of the photoionization
                       code Cloudy}",
      year          = "2020",
}