@article{10_4064_cm_8_1_71_75,
     author = {S. G{\l}adysz and Edward Marczewski and Czes{\l}aw Ryll-Nardzewski},
     title = {Concerning distances of sets and distances of functions},
     journal = {Colloquium Mathematicum},
     pages = {71--75},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1961},
     doi = {10.4064/cm-8-1-71-75},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-8-1-71-75/}
}