Husni M, Syafitri H, Siboro A, Syarifudin A, Aini Q, Wardhana IGA. THE HARMONIC INDEX AND THE GUTMAN INDEX OF COPRIME GRAPH OF INTEGER GROUP MODULO WITH ORDER OF PRIME POWER. BAREKENG: J. Math. & App. [Internet]. 1Sep.2022 [cited 23Jul.2024];16(3):961-6. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/6197