@phdthesis{76981,
  author = {N. Zagar},
  title = {Diagnosis of data assimilation systems by using normal modes},
  year = {2009},
  journal = {ECMWF Workshop on Diagnostics of data assimilation system performance, 15 - 17 June 2009},
  pages = {57-66},
  month = {2009},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}