@manual{79533,
  keywords = {Annual Report},
  author = {ECMWF},
  title = {Annual Report 1989-1990},
  year = {1991},
  journal = {ECMWF Annual Report},
  month = {1991},
  publisher = {ECMWF},
  address = {Reading},
  url = {https://www.ecmwf.int/node/16282},
  language = {eng},
}