BEZHANISHVILI, Guram; LANDRETH, Eachan. An Introduction to Elementary Set Theory. Annals of the TRIUMPHS Society, [S. l.], v. 1, n. 2, 2026. Disponível em: https://triumphsannals.journals.publicknowledgeproject.org/index.php/triumphsannals/article/view/18197. Acesso em: 10 jul. 2026.