%0 Journal Article %A Calvin F. K. Jung %T On the deficiency of product spaces %J Colloquium Mathematicum %D 1973 %P 245-246 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-27-2-245-246/ %R 10.4064/cm-27-2-245-246 %G en %F 10_4064_cm_27_2_245_246