T. Ludwig, J. (2021) “ based on well cuttings and outcrop in Permian and Triassic successions of central and north east Thailand”., Bulletin of Earth Sciences of Thailand, 7(1&2), pp. 193–203. available at: https://ph01.tci-thaijo.org/index.php/bestjournal/article/view/246674 (accessed: 21 September 2026).