@phdthesis{75172,
  author = {G.A. Kelly},
  title = {Some aspects of stratospheric data assimilation at ECMWF},
  year = {1993},
  journal = {Workshop on Stratosphere and Numerical Weather Prediction, 15-17 November 1993},
  pages = {271-315},
  month = {1993},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}