@article{10_2307_2661380,
     author = {Yehuda Shalom},
     title = {Rigidity, unitary representations of semisimple groups, and fundamental groups of manifolds with rank one transformation group},
     journal = {Annals of mathematics},
     year = {2000},
     volume = {152},
     number = {1},
     doi = {10.2307/2661380},
     zbl = {0970.22011},
     url = {http://geodesic.mathdoc.fr/articles/10.2307/2661380/}
}