Mon Oo, H., et al. “Characterization of Particulate Matters Emitted from Biomass Combustion Using Electron Microscopy and Energy Dispersive X-Ray Spectroscopy”. Journal of Research and Applications in Mechanical Engineering, vol. 8, no. 1, June 2020, pp. 67-76, https://ph01.tci-thaijo.org/index.php/jrame/article/view/220888.