Namsongnern, K., and P. Yupapin. “Hydrogen Absorption and Losses Characterization of Submarine Fiber Optic Caple”. CURRENT APPLIED SCIENCE AND TECHNOLOGY, vol. 1, no. 1, Mar. 2018, pp. 84-88, https://li01.tci-thaijo.org/index.php/cast/article/view/153125.