%0 Journal Article %A Zoltán Daróczy %A Gyula Maksa %T On a problem of Matkowski %J Colloquium Mathematicum %D 1999 %P 117-123 %V 82 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-82-1-117-123/ %R 10.4064/cm-82-1-117-123 %G pl %F 10_4064_cm_82_1_117_123