@article{1028998667, author = {Wilder, R. L.}, title = {Partially free subsets of euclidean $n$-space.}, journal = {Michigan Math. J.}, volume = {9}, number = {1}, year = {1962}, pages = { 97-107}, language = {en}, url = {http://dml.mathdoc.fr/item/1028998667} }
Wilder, R. L. Partially free subsets of euclidean $n$-space.. Michigan Math. J., Tome 9 (1962) no. 1, pp. 97-107. http://gdmltest.u-ga.fr/item/1028998667/