Sesa, Junianto, and Siswanto Siswanto. “Determination of Fractional Chromatic Numbers in the Operation of Adding Two Different Graphs: Penentuan Bilangan Kromatik Fraksional Pada Operasi Penjumlahan Dua Graf Berbeda”. Jurnal Matematika, Statistika dan Komputasi 18, no. 2 (January 1, 2022): 161-168. Accessed July 9, 2025. http://54.254.27.92/index.php/jmsk/article/view/14501.