@article{CMH_1994__69_4_140353,
     author = {R.J. Zimmer and A. Lubotzky and S. Mozes},
     title = {Superrigidity for the commensurability group of tree lattices.},
     journal = {Commentarii mathematici Helvetici},
     pages = {523--548},
     publisher = {mathdoc},
     volume = {69},
     number = {4},
     year = {1994},
     zbl = {0839.22011},
     url = {http://geodesic.mathdoc.fr/item/CMH_1994__69_4_140353/}
}