@article{PORMA_1973__32_4_115208,
     author = {Overton, Robert},
     title = {Uniform sequences of $\varepsilon $-mappings},
     journal = {Portugaliae mathematica},
     pages = {223--230},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1973},
     mrnumber = {0322780},
     zbl = {0267.54008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1973__32_4_115208/}
}