Wongkokua, W., and P. Songsiriritthigul. “INVESTIGATION OF GAS SPECIES GENERATED IN THE PHOTOEMISSION SPECTROSCOPY SYSTEM AT THE SIAM PHOTON LABORATORY”. Suranaree Journal of Science and Technology, vol. 12, no. 1, Aug. 2026, pp. 47-53, https://ph04.tci-thaijo.org/index.php/SUJST/article/view/13188.