@phdthesis{73456,
  author = {Erik Andersson and Mike Fisher},
  title = {Background errors for observed quantities and their propagation in time},
  year = {1999},
  journal = {Workshop on Diagnosis of Data Assimilation Systems, 2 - 4 November 1998},
  pages = {81-90},
  month = {1999},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}