@article{Exter:2778,
      author        = "Exter, K. M. and  van Hoof, P. A. M. and  Van de Steene,
                       G. C. and  Ottensamer, R. and  Wesson, R. and  Barlow, M.
                       J. and  Ferland, G. J. and  Porter, R. L.",
      title         = "{Herschel observations of NGC 7027}",
      year          = "2012",
}