@phdthesis{75490,
  author = {P. Lönnberg},
  title = {The ECMWF analysis system},
  year = {1982},
  journal = {Seminar on Interpretation of Numerical Weather Prediction Products, 13-17 September 1982},
  pages = {1-30},
  month = {1982},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}