@misc{76074,
  author = {Florence Rabier and J.-F. Mahfouf and Mike Fisher and H Järvinen and Adrian Simmons and Erik Andersson and F. Bouttier and P. Courtier and M. Hamrud and J. Haseler and A. Hollingsworth and L. Isaksen and E. Klinker and S. Saarinen and C. Temperton and Jean-Noël Thépaut and P. Undén and Drasko Vasiljevic},
  title = {Recent experimentation on 4D-Var and first results from a Simplified Kalman Filter},
  year = {1997},
  journal = {ECMWF Technical Memoranda},
  number = {240},
  pages = {42},
  month = {10/1997},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  url = {https://www.ecmwf.int/node/11798},
  doi = {10.21957/rxpcc3rzv},
  language = {eng},
}