@phdthesis{76547,
  author = {K. Swanson and R. Vautard and T.N. Palmer},
  title = {4DVAR and predictability},
  year = {1997},
  journal = {Workshop on Predictability, 20-22 October 1997},
  pages = {139-152},
  month = {1997},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}