@article{CMUC_1971__12_1_a5,
     author = {Dane\v{s}, Josef},
     title = {Some fixed point theorems in metric and {Banach} spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {37--51},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {1971},
     mrnumber = {0287398},
     zbl = {0224.47032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_1_a5/}
}