Firmansah, Fery. “ODD HARMONIOUS LABELING ON SOME STRING GRAPH CLASSES”. BAREKENG: Jurnal Ilmu Matematika dan Terapan 16, no. 1 (March 21, 2022): 315-322. Accessed November 23, 2024. https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/5087.