RIZWANA, A; JEYAKUMAR, G; MOHAMED ISMAIL, M. Perfect Non-Neighbor Harmonic Graphs. International Journal of Computer Sciences and Engineering, [S. l.], v. 6, n. 10, p. 555–560, 2025. DOI: 10.26438/ijcse/v6i10.555560. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/3532. Acesso em: 2 feb. 2026.