@misc{WalzGretRegameyLavorel2016,
  author    = {Walz, Ariane and Gret-Regamey, Adrienne and Lavorel, Sandra},
  title     = {Social valuation of ecosystem services in mountain regions},
  series = {Regional environmental change},
  volume    = {16},
  journal   = {Regional environmental change},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1436-3798},
  doi       = {10.1007/s10113-016-1028-x},
  pages     = {1985 -- 1987},
  year      = {2016},
  language  = {en}
}
@misc{RounsevellMetzgerWalz2019,
  author    = {Rounsevell, Mark D. A. and Metzger, Marc J. and Walz, Ariane},
  title     = {Operationalising ecosystem services in Europe},
  series = {Regional environmental change},
  volume    = {19},
  journal   = {Regional environmental change},
  number    = {8},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1436-3798},
  doi       = {10.1007/s10113-019-01560-1},
  pages     = {2143 -- 2149},
  year      = {2019},
  language  = {en}
}