TY - JOUR AU - Lambert, Alan TI - A characterization of subnormal operators JO - Glasgow mathematical journal PY - 1984 SP - 99 EP - 101 VL - 25 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005474/ DO - 10.1017/S0017089500005474 ID - 10_1017_S0017089500005474 ER -