@phdthesis{73784,
  author = {F. Bouttier},
  title = {The Kalman filter},
  year = {1995},
  journal = {Seminar on Predictability, 4-8 September 1995},
  volume = {1},
  pages = {221-246},
  month = {1995},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}