author        = "Aleman, I. and Ueta, T. and Ladjal, D. and Exter, K. M.
                       and Kastner, J. H. and Montez, R. and Tielens, A. G. G. M.
                       and Chu, Y.-H. and Izumiura, H. and McDonald, I. and Sahai,
                       R. and Siódmiak, N. and Szczerba, R. and van Hoof, P. A.
                       M. and Villaver, E. and Vlemmings, W. and Wittkowski, M.
                       and Zijlstra, A. A.",
      title         = "{Herschel Planetary Nebula Survey (HerPlaNS). First
                       detection of OH+ in planetary nebulae}",
      year          = "2014",