@phdthesis{74493,
  author = {Mike Fisher},
  title = {The sensitivity of analysis errors to the specification of background error covariances},
  year = {2007},
  journal = {ECMWF Workshop on Flow-dependent aspecyts of data assimilation, 11-13 June 2007},
  pages = {27-36},
  month = {2007},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}