%0 Journal Article %A I. Stewart %T Miscellanea %J WiadomoĊ›ci Matematyczne %D 1994 %P 198 %V 30 %N 02 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/wm.v30i02.4519/ %R 10.14708/wm.v30i02.4519 %G pl %F 10_14708_wm_v30i02_4519