@manual{76636,
  author = {C. Temperton and D.L. Williamson},
  title = {Normal mode initialization for a multi-level grid-point model},
  year = {1979},
  number = {11},
  pages = {91},
  month = {04/1979},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}