Soisa, T., A. Salam, and T. Manaka. “Stratigraphy and Petrochemistry of Volcanic Rocks at Suwan Prospect, Phitsanulok Province, central Thailand”. Bulletin of Earth Sciences of Thailand, vol. 12, no. 1, Nov. 2021, pp. 30-48, https://ph01.tci-thaijo.org/index.php/bestjournal/article/view/246788.