ANCHU S KUMAR. Some Results on Contra Harmonic Index of Some Molecular Graphs. International Journal of Intelligent Systems and Applications in Engineering, [S. l.], v. 12, n. 4, p. 5980–5985, 2024. Disponível em: https://ijisae.org/index.php/IJISAE/article/view/8036. Acesso em: 24 mar. 2026.