Susilowati, Eka, and Ratna Widayati. “Penjadwalan Kereta Api Daop 8 Surabaya Menggunakan Aljabar Max Plus”. SAINTIFIK 10, no. 1 (January 20, 2024): 67 - 74. Accessed July 3, 2024. https://jurnal.unsulbar.ac.id/index.php/saintifik/article/view/482.