@article{10_4153_CMB_1971_024_9,
     author = {Reich, Simeon},
     title = {Some {Remarks} {Concerning} {Contraction} {Mappings}},
     journal = {Canadian mathematical bulletin},
     pages = {121--124},
     year = {1971},
     volume = {14},
     number = {1},
     doi = {10.4153/CMB-1971-024-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-024-9/}
}