@misc{PortmannSiebertBaueretal.2008,
  author    = {Felix Theodor Portmann and Stefan Siebert and Christian Bauer and Petra D{\"o}ll},
  title     = {Global dataset of monthly growing areas of 26 irrigated crops : version 1.0},
  booktitle = {Frankfurt hydrology paper ; 6},
  institution = {Geowissenschaften},
  series    = {Frankfurt Hydrology Paper},
  number    = {6},
  type      = {workingpaper},
  year        = {2008},
}