@article{10_1090_S0894_0347_06_00533_9,
     author = {Junge, Marius and Xu, Quanhua},
     title = {Noncommutative maximal ergodic theorems},
     journal = {Journal of the American Mathematical Society},
     pages = {385--439},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2007},
     doi = {10.1090/S0894-0347-06-00533-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-06-00533-9/}
}