%0 Journal Article %A %T CHRONIQUE (vol. 3, fasc. 1) %J Colloquium Mathematicum %D 1954 %P 87-90 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-3-1-87-90/ %R 10.4064/cm-3-1-87-90 %G fr %F 10_4064_cm_3_1_87_90