@article{10_4064_cm_23_1_117_120,
     author = {Robert Kaufman},
     title = {Metric properties of some planar sets},
     journal = {Colloquium Mathematicum},
     pages = {117--120},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1971},
     doi = {10.4064/cm-23-1-117-120},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-117-120/}
}