@article{10_2140_agt_2012_12_37,
     author = {Khukhro, Ana and Wright, Nick~J},
     title = {Expanders and {property~A}},
     journal = {Algebraic and Geometric Topology},
     pages = {37--47},
     year = {2012},
     volume = {12},
     number = {1},
     doi = {10.2140/agt.2012.12.37},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2012.12.37/}
}