Alivia , Alivia, Kartika Yulianti, and Yaya S. Kusumah. “The Chromatic Number of the Edge Corona Operation of Cycle Graph and Star Graph ”. Jurnal Matematika, Statistika dan Komputasi 21, no. 2 (January 12, 2025): 431–438. Accessed February 22, 2025. https://journal.unhas.ac.id/index.php/jmsk/article/view/37361.