@phdthesis{75129,
  author = {E. Källén},
  title = {Bifurcation mechanisms and atmospheric blocking},
  year = {1981},
  journal = {Seminar on Problems and Prospects in Long and Medium Range Weather Forecasts, 14-18 September 1981},
  pages = {371-404},
  month = {1981},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}