@manual{75410,
  author = {P. Lionello and H. Günther and Peter Janssen},
  title = {Assimilation of altimeter data in a global third generation wave model},
  year = {1992},
  number = {67},
  pages = {88},
  month = {02/1992},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}