AFDHALUZZIKRI, M.; WARDHANA, I. G. A. W.; MAULANA, F.; BISWAS, H. R. THE NON-COPRIME GRAPHS OF UPPER UNITRIANGULAR MATRIX GROUPS OVER THE RING OF INTEGER MODULO WITH PRIME ORDER AND THEIR TOPOLOGICAL INDICES. BAREKENG: Jurnal Ilmu Matematika dan Terapan, v. 19, n. 1, p. 547-556, 13 jan. 2025.