Nagaoka, Takuya, Peter J. Sheppard, Callan Ross-Sheppard, and Nina Kononenko. 2023. “Obsidian Point Discovered on Kapingamarangi Atoll, Micronesia: Implications for Post-Settlement Regional Interactions”. Waka Kuaka 131 (4):389-426. https://www.thepolynesiansociety.org/index.php/JPS/article/view/606.