TY  - GEN
AU  - Tremolet, Y.
TI  - Diagnostics of linear and incremental approximations in 4D-Var
T2  - ECMWF/Technical Memorandum
VL  - 399
PY  - 2003///
CY  - Reading
PB  - ECMWF
KW  - PREVISÃO NUMERICA
KW  - IM
ER  -