DE POI, P.; ILARDI, G. . On the hypersurfaces contained in their Hessian. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 18, p. 21–33, 2019. Disponível em: https://studmath.uken.krakow.pl/article/view/7636. Acesso em: 16 oct. 2024.