Rodphothong, Dumrongsak, Tanin Nutaro, and Alejandro Saiz Rivera. 2019. “Comparative Study of PHITS and FLUKA for Cosmic Radiation Shielding Evaluations of Low Density and Small Atomic Mass Number Materials”. KKU Science Journal 47 (2):315-26. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/250005.