@article{10_4064_cm_7_1_95_101,
     author = {J. Cassels},
     title = {On a problem of {Steinhaus} about normal numbers},
     journal = {Colloquium Mathematicum},
     pages = {95--101},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1959},
     doi = {10.4064/cm-7-1-95-101},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-7-1-95-101/}
}