%0 Journal Article %A Ryszard B. Hetnarski %T Do Redaktora: %J Mathematica Applicanda %D 2010 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v38i1.261/ %R 10.14708/ma.v38i1.261 %G pl %F 10_14708_ma_v38i1_261