@article{1102971639,
author = {Mansfield, Richard},
title = {Perfect subsets of definable sets of real numbers.},
journal = {Pacific J. Math.},
volume = {35},
number = {3},
year = {1970},
pages = { 451-457},
language = {en},
url = {http://dml.mathdoc.fr/item/1102971639}
}
Mansfield, Richard. Perfect subsets of definable sets of real numbers.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 451-457. http://gdmltest.u-ga.fr/item/1102971639/