BEREZMAN, A. About the affine normal of a hypersurface in connected space. Lithuanian Mathematical Journal, [S. l.], v. 6, n. 4, p. 493–496, 1966. DOI: 10.15388/LMJ.1966.19747. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19747.. Acesso em: 27 apr. 2024.