@manual{76619,
  author = {C. Temperton},
  title = {On the FACR (l) Algorithm for the discrete Poisson equation},
  year = {1977},
  number = {14},
  pages = {40},
  month = {09/1977},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}