CELAKOSKA-JORDANOVA, Vesna. TERNARY GROUPOID POWERS. Matematichki Bilten, [S. l.], v. 33, n. 1, p. 15–19, 2009. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1747. Acesso em: 14 aug. 2026.