DESZCZ, R. Curvature properties of some submanifolds in space forms. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 4, p. 39–52, 2004. Disponível em: https://studmath.uken.krakow.pl/article/view/13307. Acesso em: 31 oct. 2026.