@phdthesis{76896,
  author = {W. Wergen and Sebastian Hess and Martin Lange},
  title = {Variational soil assimilation at DWD},
  year = {2005},
  journal = {ECMWF/ELDAS Workshop on Land Surface Assimilation, 8-11 November 2004},
  pages = {69-78},
  month = {2005},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}