M. Kawasaki, K. Yoshizaki, & M. Sugimoto. (2017). Water Sealing by Wire Brush with Grease for Pneumatic Caisson Method at Great Depth Underground. Geotechnical Engineering Journal of the SEAGS & AGSSEA, 48(2), 64–71. https://doi.org/10.14456/seagj.2017.24