1. An improved system for measuring refractive index using the thermal immersion method;Danhara;Quat. Int.,1992
2. Hydration rate of obsidian: new experimental techniques allow more precise dating of archeological and geological sites containing obsidian;Friedman;Science,1976
3. Geological report on the 1991 eruption at Unzen volcano (Part 1);Bull. Volcanol. Soc. Japan,1992
4. Kazahaya, K., Kawanabe, Y., Kusakabe, M., Sakaguchi, K., Takarada, S., Mizuno, K., Soya, T., 1991. Degassing and density changes during ascent of dacite magma, 1991 eruption of Unzen volcano. Abstract of Annual Meeting Volcanol. Soc. Japan 1991 (2), 63, in Japanese.
5. Glass-bead silica determination for a suite of volcanic rocks from the Owyhee Plateau;Kittleman;Oregon Bull. Geol. Soc. Am.,1963