%0 Journal Article %A R. Telgársky %T Derivatives of cartesian product and dispersed spaces %J Colloquium Mathematicum %D 1968 %P 59-66 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-19-1-59-66/ %R 10.4064/cm-19-1-59-66 %G en %F 10_4064_cm_19_1_59_66