Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRAMATSU Yoshio and OKA Yukitoshi,Measuring Stress in Shaft Linings Coal Mines,Journal of the Mining and Metallurgical Institute of Japan,03694194,The Mining and Materials Processing Institute of Japan,1960,76,866,543-548,https://cir.nii.ac.jp/crid/1390001205981672320,https://doi.org/10.2473/shigentosozai1953.76.866_543