@phdthesis{76592, author = {O. Talagrand}, title = {Four-dimensional variational assimilation}, year = {1988}, journal = {Seminar on Data Assimilation and the Use of Satellite Data, 5-9 September 1988}, volume = {II}, pages = {1-30}, month = {1988}, publisher = {ECMWF}, address = {Shinfield Park, Reading}, language = {eng}, }