@article{SiebertBurkeFauresetal.2010,
  author    = {Stefan Siebert and Jacob Burke and Jean-Marc Faures and Karen Frenken and Jippe Hoogeveen and Petra D{\"o}ll and Felix Theodor Portmann},
  title     = {Groundwater use for irrigation - a global inventory},
  journal   = {Hydrology and earth system sciences discussions},
  volume    = {7},
  pages     = {3977 -- 4021},
  doi       = {10.5194/hessd-7-3977-2010},
  year      = {2010},
}