author        = "van Hoof, P. A. M. and  Barlow, M. J. and  Van de Steene,
                       G. C. and  Exter, K. M. and  Wesson, R. and  Ottensamer, R.
                       and  Lim, T. L. and  Sibthorpe, B. and  Matsuura, M. and 
                       Ueta, T. and  Van Winckel, H. and  Waelkens, C.",
      title         = "{Herschel observations of planetary nebulae in the MESS
                       key program}",
      year          = "2012",