@article{SeibertMerzApel2017,
  author    = {Mathias Seibert and Bruno Merz and Heiko Apel},
  title     = {Seasonal forecasting of hydrological drought in the Limpopo Basin},
  journal   = {Hydrology and earth system sciences : HESS},
  series    = {a comparison of statistical methods},
  volume    = {21},
  pages     = {1611 -- 1629},
  doi       = {10.5194/hess-21-1611-2017},
  year      = {2017},
}