TY  - GEN
AU  - Courtier, P.
AU  - Vasiljevic, D.
AU  - Rabier, F.
TI  - The ECMWF implementation of three dimensional variational assimilation (3D-Var)
T2  - ECMWF Technical Memorandum
VL  - 241
PY  - 1997///
CY  - Reading
PB  - ECMWF
KW  - PREVISÃO NUMÉRICA
KW  - IM
ER  -