author        = "Röllig, M. and  Abel, N. P. and  Bell, T. and  Bensch, F.
                       and  Black, J. and  Ferland, G. J. and  Jonkheid, B. and 
                       Kamp, I. and  Kaufman, M. J. and  Le Bourlot, J. and  Le
                       Petit, F. and  Meijerink, R. and  Morata, O. and 
                       Ossenkopf, V. and  Roueff, E. and  Shaw, G. and  Spaans, M.
                       and  Sternberg, A. and  Stutzki, J. and  Thi, W.-F. and 
                       van Dishoeck, E. F. and  van Hoof, P. A. M. and  Viti, S.
                       and  Wolfire, M. G.",
      title         = "{A photon dominated region code comparison study}",
      year          = "2007",