Jailani, Zakiul Fahmi. “Assessing Indonesia Spatial Data Infrastructure Using R for Disaster Management”. International Journal on Advanced Science, Engineering and Information Technology 9, no. 6 (December 1, 2019): 1807–1812. Accessed June 2, 2024. http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/4173.