@article{10_4153_CMB_1974_123_9,
     author = {Kiang, Mo Tak},
     title = {Mappings {Related} to {Contractions}},
     journal = {Canadian mathematical bulletin},
     pages = {679--684},
     year = {1975},
     volume = {17},
     number = {5},
     doi = {10.4153/CMB-1974-123-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-123-9/}
}