Yongprayun, Rawipha, Warakhom Wongchai, and Weera Punin. 2019. “‘D.I.Y. Boiler in Thung Bo Paen Style’ Innovative Energy Management Model by Process Innovation”. Area Based Development Research Journal 11 (4):291-304. https://so01.tci-thaijo.org/index.php/abcjournal/article/view/193450.