@article{MAN_1955__129_160439,
     author = {H. Klingen},
     title = {Diskontinuierliche {Gruppen} in symmetrischen {R\"aumen.} {I.}},
     journal = {Mathematische Annalen},
     pages = {345--369},
     publisher = {mathdoc},
     volume = {129},
     year = {1955},
     zbl = {0065.07101},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__129_160439/}
}