%0 Journal Article %A A. J. Ostaszewski %T On lexicographic products %J Colloquium Mathematicum %D 1974 %P 121-125 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-30-1-121-125/ %R 10.4064/cm-30-1-121-125 %G en %F 10_4064_cm_30_1_121_125