%0 Journal Article %A Mieczysław Wodecki %T . %J Mathematica Applicanda %D 1999 %P 35-44 %V 27 %N 41 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v27i41.1869/ %R 10.14708/ma.v27i41.1869 %G pl %F 10_14708_ma_v27i41_1869