%0 Journal Article %A . Redaktor %T Cerificate from Polish Mathematical Society %J Mathematica Applicanda %D 2001 %P 81 %V 29 %N 43/02 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v29i43/02.1894/ %R 10.14708/ma.v29i43/02.1894 %G pl %F 10_14708_ma_v29i43_02_1894