Agung Prabowo, Mustafa Mamat, Sukono, Pramono Sidi, and Wahyudin. “Ethnomodelling: Aboge Cikakak Calendar Convertion into Gregorian Calendar Using Brute Force Algorithm”. International Journal of Advanced Science and Technology, Vol. 29, no. 7, May 2020, pp. 1633 -46, http://sersc.org/journals/index.php/IJAST/article/view/16248.