Tungjai, M., A. Sukpor, S. Kothan, and S. Phadngam. “Effect of Diagnostic Medical X-Rays in the Range of 50 KeV up to 100 KeV of Energy on Ferrous Sulfate Solution With Saturated O2 Gas: Preliminary Study”. Journal of Associated Medical Sciences, vol. 51, no. 3, July 2018, pp. 119-21, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/120578.