CHIN, A. Y. M. Exhaustion Numbers of Maximal Sum-free Sets of Certain Cyclic Groups. MATEMATIKA, [S. l.], v. 15, p. 57–63, 1999. DOI: 10.11113/matematika.v15.n.381. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/381. Acesso em: 1 may. 2024.