Khamkhod, Ketsiri, Phimphaka Taninpong, Watha Minsan, and Salinee Thumronglaohapun. 2020. “Causal Analysis of Ground-Level Ozone and Other Variables in Map Ta Phut Pollution Control Zone, Rayong Province, Thailand”. Science Essence Journal 36 (2):21-39. https://ejournals.swu.ac.th/index.php/sej/article/view/12311.