1. On the geology and stratigraphy of the Nam Phrom dam and its vicinity;Bunopas;Geol. Soc. Thailand, Newsletter,1971
2. Bunopas, S. (1981) Paleogeographic history of western Thailand and adjacent parts of Southeast Asia: a plate-tectonics interpretation. Ph.D. Thesis, Victoria Univ., Wellington, New Zealand. 810p.
3. Opening of the gulf of Thailand-rifting of continental Southeast Asia and Late Cenozoic tectonics;Bunopas;J. Geol. Soc. Thailand,1983
4. Upper Triassic Estheriidae in Thailand and the conchotracan development in Asia in Mesozoic Era;Kobayashi;Geol. Palaeont. Southeast Asia,1975