@article{2110, author = {Tukey, J.W.}, title = {Some notes on the separation of convex sets}, journal = {Portugaliae mathematica}, volume = {3}, year = {1942}, pages = {95-102}, zbl = {0028.23202}, mrnumber = {0006606}, language = {en}, url = {http://dml.mathdoc.fr/item/2110} }
Tukey, J.W. Some notes on the separation of convex sets. Portugaliae mathematica, Tome 3 (1942) pp. 95-102. http://gdmltest.u-ga.fr/item/2110/