R GOPI. k-Contra Harmonic Mean Labeling of Snake Related Graphs. Mathematical Journal of Interdisciplinary Sciences, [S. l.], v. 7, n. 2, p. 77–80, 2019. DOI: 10.15415/mjis.2019.72010. Disponível em: https://mjis.chitkara.edu.in/index.php/mjis/article/view/175. Acesso em: 3 may. 2024.