@phdthesis{75456,
  author = {A. Lorenc},
  title = {Optimal nonlinear analysis},
  year = {1988},
  journal = {Seminar on Data Assimilation and the Use of Satellite Data, 5-9 September 1988},
  volume = {II},
  pages = {71-98},
  month = {1988},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}