ZAID, Nurhidayah; SARMIN, Nor Haniza; KHASRAW, Sanhan Muhammad Salih; GAMBO, Ibrahim. Perfect Codes in Graph Theory: A Ring-Theoretic Perspective. Journal of Quality Measurement and Analysis, [S. l.], v. 21, n. 2, p. 153–162, 2026. DOI: 10.17576/jqma.2102.2025.11. Disponível em: https://jqma.ukm.my/index.php/jqma/article/view/430. Acesso em: 3 oct. 2026.