%0 Journal Article %A E. Grzegorek %T On a paper by Karel Prikry concerning Ulam's problem on families of measures %J Colloquium Mathematicum %D 1979 %P 197-208 %V 42 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-42-1-197-208/ %R 10.4064/cm-42-1-197-208 %G en %F 10_4064_cm_42_1_197_208