@article{1256055209,
author = {Rhie, Young H.},
title = {A density theorem on spectra of discrete subgroups of semi-simple Lie groups},
journal = {Illinois J. Math.},
volume = {10},
number = {4},
year = {1966},
pages = { 147-158},
language = {en},
url = {http://dml.mathdoc.fr/item/1256055209}
}
Rhie, Young H. A density theorem on spectra of discrete subgroups of semi-simple Lie groups. Illinois J. Math., Tome 10 (1966) no. 4, pp. 147-158. http://gdmltest.u-ga.fr/item/1256055209/