TY - CPAPER AU - F. Bouttier BT - Seminar on Predictability, 4-8 September 1995 CY - Shinfield Park, Reading DA - 1995 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1995 SP - 221 EP - 246 T2 - Seminar on Predictability, 4-8 September 1995 TI - The Kalman filter VL - 1 ER -