@article{10_4153_CMB_2000_041_2,
     author = {Hughes, Bruce and Taylor, Larry and Williams, Bruce},
     title = {Controlled {Homeomorphisms} {Over} {Nonpositively} {Curved} {Manifolds}},
     journal = {Canadian mathematical bulletin},
     pages = {343--354},
     year = {2000},
     volume = {43},
     number = {3},
     doi = {10.4153/CMB-2000-041-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2000-041-2/}
}