W. Phromsuwan, Y. Kamata, T. Charoentitirat, K. Ueno, and A. Sardsud, “Permian radiolarian cherts and their geochemical characteristics in the Central Plain of Thailand: Implications for the geological affiliation and origin of the Permian chert”, TGJ, vol. 6, no. 10, pp. 26–50, Dec. 2025.