@manual{76500,
  author = {J. Steppeler},
  title = {Finite element schemes for the vertical discretization of the ECMWF forecast model using quadratic and cubic elements},
  year = {1986},
  number = {55},
  pages = {59},
  month = {02/1986},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}