%0 Journal Article %A De Poi, Pietro %A Ilardi, Giovanna %T On the hypersurfaces contained in their Hessian %J Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica %D 2019 %N 18 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUPCM_2019_18_a1/ %G en %F AUPCM_2019_18_a1