@article{Wang:2147,
      author        = "Wang, Y. and  Ferland, G. J. and  Lykins, M. L. and 
                       Porter, R. L. and  van Hoof, P. A. M. and  Williams, R. J.
                       R.",
      title         = "{Radiative cooling II: effects of density and
                       metallicity}",
      year          = "2014",
}