@phdthesis{74048,
  author = {P. Courtier and Jean-Noël Thépaut and A. Hollingsworth},
  title = {A strategy for operational implementation of 4D-var},
  year = {1992},
  journal = {Workshop on Variational Assimilation, with special emphasis on Three-dimensional Aspects, 9-12 November 1992},
  pages = {437-464},
  month = {1992},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}