TY - GEN AU - Roberto Buizza BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 10/1992 DO - 10.21957/hso625cg2 LA - eng M1 - 189 PB - ECMWF PP - Shinfield Park, Reading PY - 1992 EP - 17 T2 - ECMWF Technical Memoranda TI - Unstable perturbations computed using the adjoint technique UR - https://www.ecmwf.int/node/8411 ER -