STUPEL, .; SIGLER, . A proposition from algebra – how would Pythagoras phrase it?. Ohio Journal of School Mathematics, [S. l.], v. 75, n. 1, 2017. Disponível em: http://voyager.janeway.systems:9999/index.php/OJSM/article/view/5471. Acesso em: 7 nov. 2026.