@article{10_1017_S0017089500005504,
     author = {Barnett, C. and Wilde, I. F.},
     title = {Averaging operators in non commutative {Lp} spaces {II}},
     journal = {Glasgow mathematical journal},
     pages = {121--126},
     year = {1984},
     volume = {25},
     number = {1},
     doi = {10.1017/S0017089500005504},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005504/}
}