%0 Journal Article %A J. Musielak %T Miscellanea %J WiadomoĊ›ci Matematyczne %D 1990 %P 83-84 %V 29 %N 01 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/wm.v29i01.4427/ %R 10.14708/wm.v29i01.4427 %G pl %F 10_14708_wm_v29i01_4427