@article{GDZPPN002069229,
title = {Superrigidity for the commensurability group of tree lattices.},
journal = {Commentarii mathematici Helvetici},
volume = {69},
year = {1994},
pages = {523-548},
zbl = {0839.22011},
url = {http://dml.mathdoc.fr/item/GDZPPN002069229}
}
Zimmer, R.J.; Lubotzky, A.; Mozes, S. Superrigidity for the commensurability group of tree lattices.. Commentarii mathematici Helvetici, Tome 69 (1994) pp. 523-548. http://gdmltest.u-ga.fr/item/GDZPPN002069229/