@article{10_4064_fm_41_1_6_11,
     author = {N. Routledge},
     title = {Concerning definable sets},
     journal = {Fundamenta Mathematicae},
     pages = {6--11},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {1955},
     doi = {10.4064/fm-41-1-6-11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-41-1-6-11/}
}