KAUFMAN, R. Gabriel’s Horn and the Painter’s Paradox in Perspective. Ohio Journal of School Mathematics, [S. l.], v. 94, n. 1, p. 1–5, 2023. Disponível em: https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/9483. Acesso em: 29 apr. 2026.