@manual{75052,
  author = {M. Jarraud and Adrian Simmons and M. Kanamitsu},
  title = {Sensitivity of medium-range weather forecasts to the use of an envelope orography.},
  year = {1986},
  number = {56},
  pages = {83},
  month = {09/1986},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}