@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040035,
 author = {Hosaka, Tetsuya},
 issue = {4},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {Mar},
 pages = {491--504},
 title = {On Non-Sensitive Homeomorphisms of the Boundary of a Proper Cocompact CAT(0) Space},
 volume = {18},
 year = {2012}
}