%0 Journal Article %A Ewa Ligocka %T On the extendability of quadratic polynomial mappings of the plane %J Annales Polonici Mathematici %D 2009 %P 283-294 %V 96 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap96-3-6/ %R 10.4064/ap96-3-6 %G en %F 10_4064_ap96_3_6