Krittacom, B., P. Amatachaya, and I. Worapun. “Radiation Heat Flux of the Open-Cellular Porous Gas Burner”. Engineering and Applied Science Research, vol. 40, no. 4, Sept. 2014, pp. 539-48, https://ph01.tci-thaijo.org/index.php/easr/article/view/21741.