1. Asano, S., Park, S.G., Matsuura, S., and Okamoto, T., 2000, Groundwater flow analysis in a large landslide during the snow melting season: Journal of Japan Landslide Society, 36, 70-77 (in Japanese).
2. Matsui, T., Park, S.G., Sakamoto, S., Kanata, J., and Daikoku, A., 1997, Verification of resistivity-based high-density prospecting applied to mountain tunneling: ITA World Tunnel Congress, Vienna, 83-88.
3. Matsuura, S., Asano, S., Okamoto, T., Takeuchi, Y., and Park, S.G., 1998, Observation of pore-water pressure and landslide movement in Tertiary soft rocks: The Geotechnics of Hard Soil-Soft Rocks, Naples, Italy, 1125-1128.
4. Park, S.G., and Matsui, T., 1998, Basic study on resistivity of rocks. Butsuri-Tansa (Geophysical Exploration), 51, 201-209 (in Japanese).