TY - JOUR AU - Barnett, Christopher TI - Averaging operators in non commutative Lp spaces I JO - Glasgow mathematical journal PY - 1983 SP - 71 EP - 74 VL - 24 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005073/ DO - 10.1017/S0017089500005073 ID - 10_1017_S0017089500005073 ER -