MENDOZA, José; PAKHROU, Tijani. Characterizations of inner product spaces by means of norm one points. MATHEMATICA SCANDINAVICA, [S. l.], v. 97, n. 1, p. 104–114, 2005. DOI: 10.7146/math.scand.a-14966. Disponível em: https://tidsskrift.dk/math/article/view/14966. Acesso em: 14 aug. 2026.