@phdthesis{76792,
  author = {S. Uppala},
  title = {Observational requirements for future reanalyses},
  year = {2006},
  journal = {ECMWF/Geo Workshop on Atmospheric Reanalyis, 19-22 June 2006},
  pages = {113-117},
  month = {2006},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}