@manual{73503,
  author = {K Arpe and J. Gibson and A. Hollingsworth},
  title = {The effect of replacing Southern Hemispheric analyses by climatology on medium range weather forecasts},
  year = {1977},
  number = {2},
  pages = {40},
  month = {01/1977},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}