@article{10_2140_agt_2015_15_429,
     author = {Chao, Khek and Swenson, Eric},
     title = {Tits rigidity of {CAT(0)} group boundaries},
     journal = {Algebraic and Geometric Topology},
     pages = {429--444},
     year = {2015},
     volume = {15},
     number = {1},
     doi = {10.2140/agt.2015.15.429},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2015.15.429/}
}