[1]
M. Husni, H. Syafitri, A. Siboro, A. Syarifudin, Q. Aini, and I. G. A. Wardhana, “THE HARMONIC INDEX AND THE GUTMAN INDEX OF COPRIME GRAPH OF INTEGER GROUP MODULO WITH ORDER OF PRIME POWER”, BAREKENG: J. Math. & App., vol. 16, no. 3, pp. 961-966, Sep. 2022.