Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1971__12_4_a1, author = {Vlach, Milan}, title = {A separation theorem for finite families}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {655--660}, publisher = {mathdoc}, volume = {12}, number = {4}, year = {1971}, mrnumber = {0290126}, zbl = {0229.52008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_4_a1/} }
Vlach, Milan. A separation theorem for finite families. Commentationes Mathematicae Universitatis Carolinae, Tome 12 (1971) no. 4, pp. 655-660. http://geodesic.mathdoc.fr/item/CMUC_1971__12_4_a1/