@article{IM_1979__51_142628,
     author = {Calvin C. Moore and Robert J. Zimmmer},
     title = {Groups {Admitting} {Ergodic} {Actions} with {Generalized} {Discrete} {Spectrum.}},
     journal = {Inventiones mathematicae},
     pages = {171--188},
     publisher = {mathdoc},
     volume = {51},
     year = {1979},
     zbl = {0399.22005},
     url = {http://geodesic.mathdoc.fr/item/IM_1979__51_142628/}
}