Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKUBO Seisuke and HASHIBA Kimihiro and FUKUI Katsunori,A Consideration on Long-Term Strength of Rock,Journal of MMIJ,18816118,The Mining and Materials Processing Institute of Japan,2013,129,10_11,635-641,https://cir.nii.ac.jp/crid/1390001205281217280,https://doi.org/10.2473/journalofmmij.129.635