@phdthesis{74040,
  author = {P. Courtier},
  title = {Introduction to numerical weather prediction data assimilation methods},
  year = {1993},
  journal = {ECMWF/EUMETSAT Seminar on Developments in the Use of Satellite Data in Numerical Weather Prediction, 6-10 September 1993},
  pages = {189-208},
  month = {1993},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}