TY - GEN AU - G.J. Cats BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 06/1981 DO - 10.21957/97884wgx4 LA - eng M1 - 33 PB - ECMWF PP - Shinfield Park, Reading PY - 1981 EP - 15 T2 - ECMWF Technical Memoranda TI - A method for solving a system of linear equations efficiently in order to optimise the analysis code: Operational implementation UR - https://www.ecmwf.int/node/8613 ER -