@manual{73673,
  author = {P. Bergthorsson},
  title = {The use of empirical methods for mesoscale pressure forecasts},
  year = {1980},
  number = {22},
  pages = {31},
  month = {11/1980},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}