@article{1183497363, author = {Roberts, J. H.}, title = {On a problem of Knaster and Zarankiewicz}, journal = {Bull. Amer. Math. Soc.}, volume = {40}, number = {12}, year = {1934}, pages = { 281-283}, language = {en}, url = {http://dml.mathdoc.fr/item/1183497363} }
Roberts, J. H. On a problem of Knaster and Zarankiewicz. Bull. Amer. Math. Soc., Tome 40 (1934) no. 12, pp. 281-283. http://gdmltest.u-ga.fr/item/1183497363/