Putera, Muhammad Luthfi Setiarno. “Non-Cash Payment Transaction Projection Using ARIMAX : Efect of Calendar”. Jurnal Matematika, Statistika dan Komputasi 16, no. 3 (April 28, 2020): 296-310. Accessed July 9, 2025. http://54.254.27.92/index.php/jmsk/article/view/8546.