%0 Journal Article %A Andrzej Prószyński %T Forms and mappings. I: Generalities %J Fundamenta Mathematicae %D 1984 %P 219-235 %V 122 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-122-3-219-235/ %R 10.4064/fm-122-3-219-235 %G en %F 10_4064_fm_122_3_219_235