@article{GT_2007_11_2_a9,
     author = {Wortman, Kevin},
     title = {Quasi-isometric rigidity of higher rank {S{\textendash}arithmetic} lattices},
     journal = {Geometry & topology},
     pages = {995--1048},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2007},
     doi = {10.2140/gt.2007.11.995},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2007.11.995/}
}