Some necessary and sufficient conditions for diophantine graphs. Gulf Journal of Mathematics, [S. l.], v. 21, n. 1, p. 610–624, 2025. DOI: 10.56947/gjom.v21i1.3553. Disponível em: https://gjom.org/index.php/gjom/article/view/3553. Acesso em: 20 sep. 2026.