@article{MAN_1978__237_182782,
     author = {Su-shing Chen},
     title = {Spectra of {Discrete} {Uniform} {Subgroups} of {Semisimple} {Lie} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {157--160},
     publisher = {mathdoc},
     volume = {237},
     year = {1978},
     zbl = {0368.22004},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__237_182782/}
}