Suntivarakorn, R. and Sakkampang, C. (2012) “A Study of Boiler Efficiency Using Blended Fuel between Glycerin and Heavy Oil Fuel”, Engineering and Applied Science Research, 37(2), pp. 109–119. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/1696 (accessed: 31 August 2026).