%0 Journal Article %A Grzegorz Andrzejczak %T On regular tangent covectors, regular differential forms, and smooth vector fields on a differential space %J Colloquium Mathematicum %D 1982 %P 243-255 %V 46 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-46-2-243-255/ %R 10.4064/cm-46-2-243-255 %G en %F 10_4064_cm_46_2_243_255