@article{IM_1978__46_142549,
     author = {J.P. Conze and N. Dang-Ngoc},
     title = {Ergodic {Theorems} for {Noncommutative} {Dynamical} {Systems.}},
     journal = {Inventiones mathematicae},
     pages = {1--16},
     publisher = {mathdoc},
     volume = {46},
     year = {1978},
     zbl = {0374.46058},
     url = {http://geodesic.mathdoc.fr/item/IM_1978__46_142549/}
}