@article{MAN_1973__204_162461,
     author = {Chi Song Wong},
     title = {A {Fixed} {Point} {Theorem} for a {Class} of {Mappings.}},
     journal = {Mathematische Annalen},
     pages = {97--104},
     publisher = {mathdoc},
     volume = {204},
     year = {1973},
     zbl = {0243.54040},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__204_162461/}
}