CENO, S. Some properties of the superior and inferior semi inner product function associated to the 2-norm. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 12, n. 5, p. 6254–6260, 2016. DOI: 10.24297/jam.v12i5.322. Disponível em: https://rajpub.com/index.php/jam/article/view/12-5-322. Acesso em: 4 dec. 2024.