Mituhiko Sugihara, Kazunari Nawa, Yuji Nishi, Tsuneo Ishido, Keiichi Sakaguchi. Gravity monitoring at the Hachijojima geothermal field, Japan. Proceedings of the 10th SEGJ International Symposium. 2011. 487
Tamanyu Shiro, Sakaguchi Keiichi, Nakao Shinsuke. Summary of the basic study on the assessment of influence by heat and hydrothermal water for geological disposal of nuclear waste (Part 2). Bull. Geol. Surv. Japan. 2008. 59. 1. 1-6