TY - GEN AU - R. Hoffman AU - J-F. Louis AU - T. Nehrkorn BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 02/1992 DO - 10.21957/xf1snal LA - eng M1 - 184 PB - ECMWF PP - Shinfield Park, Reading PY - 1992 EP - 20 T2 - ECMWF Technical Memoranda TI - A method for implementing adjoint calculations in the discrete case UR - https://www.ecmwf.int/node/9906 ER -