author        = "Van de Steene, G. C. and van Hoof, P. A. M. and Exter, K.
                       M. and Barlow, M. J. and Cernicharo, J. and Etxaluze, M.
                       and Gear, W. K. and Goicoechea, J. R. and Gomez, H. L. and
                       Groenewegen, M. A. T. and Hargrave, P. C. and Ivison, R. J.
                       and Leeks, S. J. and Lim, T. L. and Matsuura, M. and
                       Olofsson, G. and Polehampton, E. T. and Swinyard, B. M. and
                       Ueta, T. and Van Winckel, H. and Waelkens, C. and Wesson,
      title         = "{Herschel imaging of the dust in the Helix nebula (NGC
      year          = "2015",