Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
D. U. Deere and D. W. Deere,The Rock Quality Designation (RQD) Index in Practice,Rock Classification Systems for Engineering Purposes,,"ASTM International100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959",1988-01-01,,,91-101,https://cir.nii.ac.jp/crid/1363670318797056896,https://doi.org/10.1520/stp48465s