Cullena, A., Macpherson, C., Taib, N., Burton-Johnson, A., Dennis Geist, D., Spell, T., & Banda, R. (2013). Age and petrology of the Usun Apau and Linau Balui volcanics: Windows to central Borneo’s interior. Journal of Asian Earth Sciences, 76, 372-388. https://doi.org/10.1016/j.jseaes.2013.05.003