Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nagase Kumpei and Katayama Ikuo and Hatakeyama Kohei and Akamatsu Yuya and Okazaki Keishi and Abe Natsue and Michibayashi Katsuyoshi and Yokoyama Tadashi and Oman Drilling Project Science Party,On porosity determination for hard rock drilling using core samples collected by the Oman Drilling Project,The Journal of the Geological Society of Japan,00167630,The Geological Society of Japan,2020-12-15,126,12,713-717,https://cir.nii.ac.jp/crid/1390005999447792384,https://doi.org/10.5575/geosoc.2020.0043