@article{10_2140_agt_2008_8_1667,
     author = {Mooney, Christopher},
     title = {Examples of non-rigid {CAT(0)} groups from the category of knot groups},
     journal = {Algebraic and Geometric Topology},
     pages = {1667--1690},
     year = {2008},
     volume = {8},
     number = {3},
     doi = {10.2140/agt.2008.8.1667},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.1667/}
}