Teguh Panuju, Achmad Yahya, and Mustofa Usman. “PM2.5 Concentration Pattern in ASEAN Countries Based on Population Density”. Procedia of Engineering and Life Science 40 (July 7, 2023). Accessed May 20, 2024. https://pels.umsida.ac.id/index.php/PELS/article/view/1385.