@article{MM2_1992__75_4_155713,
     author = {B. Sury},
     title = {Arithmetic groups and salem numbers.},
     journal = {Manuscripta mathematica},
     pages = {97--102},
     publisher = {mathdoc},
     volume = {75},
     number = {4},
     year = {1992},
     zbl = {0752.11043},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__75_4_155713/}
}