Tuan, Ta Van, and Nguyen Quang Minh. “Calculation of Effective Emissivity of Isothermal Diffuse Cylindrical-Inner-Cone Cavity Using Polynomial Interpolation Technique”. Communications in Physics 26, no. 4 (February 27, 2017): 335. Accessed September 29, 2021. https://vjs.ac.vn/index.php/cip/article/view/8371.