1. Nihon-Kagakukai (Chemical Society of Japan), 1975. Kagaku-Binran, Kisohen II (Handbook of Chemistry, Basic Version II), second ed. (in Japanese).
2. Ito, M., Okamoto, M., Shibata, M., Sasaki, Y., Danbara, T., Suzuki, K., Watanabe, T., 1993. Mineral composition of bentonite. PNC Tech. Rep. PNC TN8430 93-003 (in Japanese).
3. Japan Atomic Energy Agency (JAEA), 2006. JAEA database on basic characteristics of buffer material 2006. .
4. Japan Nuclear Cycle Development Institute (JNC), 2000. Second progress report on research and development for the geological disposal of HLW in Japan − H12: project to establish the scientific and technical basis for HLW disposal in Japan − supporting report 3: safety assessment of the geological disposal system. JNC Tech. Rep. JNC TN1410 2000-004.
5. Kahr, G., Bucher, F., Mayor, P.A., 1989. Water uptake and swelling pressure in a bentonite-based backfill. In: Lutze, W., Ewing, R.C. (Eds.), Scientific Basis for Nuclear Waste Management XII. Mater. Res. Soc. Symp. Proc., vol. 127, pp. 683–689.