@misc{1321978373485,
  author = {Franco Molteni and Tim Stockdale and Magdalena Alonso Balmaseda and Gianpaolo Balsamo and Roberto Buizza and Laura Ferranti and Linus Magnusson and Kristian Mogensen and T.N. Palmer and Fr{\'e}d{\'e}ric Vitart},
  title = {The new ECMWF seasonal forecast system (System 4)},
  year = {2011},
  journal = {ECMWF Technical Memoranda},
  number = {656},
  pages = {49},
  month = {11/2011},
  publisher = {ECMWF},
  url = {\ },
  doi = {10.21957/4nery093i},
  language = {eng},
}