@manual{80480,
  author = {Michael Rennie and J. de Kloe},
  title = {Aeolus observational requirements and the measurement grouping algorithm},
  year = {2013},
  journal = {ESA Contract Report},
  number = {TN15.2},
  month = {2013},
  publisher = {ECMWF},
  language = {eng},
}