@article{10_4153_CMB_1970_022_9,
     author = {Ng, Kai-Wang},
     title = {A {Remark} on {Contractive} {Mappings}},
     journal = {Canadian mathematical bulletin},
     pages = {111--113},
     year = {1970},
     volume = {13},
     number = {1},
     doi = {10.4153/CMB-1970-022-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-022-9/}
}