Supattananon, Naratip, Praphan Yawara, Apiwat Youngwilai, and Raknoi Arkararungruangkul. 2022. “Productivity improvement through a work study with ergonomic risk assessment: A case study of a high-voltage line distribution operation”. Engineering and Applied Science Research 49 (5):688-95. https://ph01.tci-thaijo.org/index.php/easr/article/view/247872.