TY - SLIDE KW - annual seminar AU - Mike Fisher BT - ECMWF Annual Seminar 2004 C1 - Events DA - 2004 LA - eng PY - 2004 T2 - ECMWF Annual Seminar 2004 T3 - ECMWF Annual Seminar TI - Recent developments in numerical methods for 4D-Var ER -