TY - JOUR AU - Kittaneh, Fuad TI - On normal derivations of Hilbert–Schmidt type JO - Glasgow mathematical journal PY - 1987 SP - 245 EP - 248 VL - 29 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006893/ DO - 10.1017/S0017089500006893 ID - 10_1017_S0017089500006893 ER -