Kamonwangkoon, B., P. Kittiwiwat, J. Prabkhet, and W. Jeungthanasirigool. “Design of the Portable Gamma Radiation Detector”. PNU Journal of Applied Science, Engineering & Technology, vol. 3, no. 1, Dec. 2024, pp. 1-9, https://ph05.tci-thaijo.org/index.php/JASET/article/view/308.