@article{700949,
     title = {Non-separable Borel sets},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1962},
     pages = {[341]-342},
     mrnumber = {MR0312481},
     zbl = {0111.35201},
     url = {http://dml.mathdoc.fr/item/700949}
}

Stone, A. H. Non-separable Borel sets, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1962), pp. [341]-342. http://gdmltest.u-ga.fr/item/700949/