Positivity and the Michael’s Problem. Global Journal of Science Frontier Research, [S. l.], v. 26, n. F1, p. 68–71, 2026. DOI: 10.34257/GJSFRF256669. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/103115. Acesso em: 20 aug. 2026.