1. 1) S. Saito, T. Tanaka, Y. Sudo et al., Design of High Temperature Engineering Test Reactor (HTTR), JAERI-1332, Japan Atomic Energy Agency (JAEA) (1994).
2. 2) S. Ueta, J. Aihara, K. Sawa et al., “Development of high temperature gas-cooled reactor (HTGR) fuel in Japan,” Prog. Nucl. Ener., 53, 788-793 (2011).
3. 3) Nuclear Energy Research Advisory Committee and the Generation IV International Forum., 03-GA500034-08, United States Department of Energy (U. S. DOE) (2004).
4. 3) Nuclear Energy Research Advisory Committee and the Generation IV International Forum., 03-GA500034-08, United States Department of Energy (U. S. DOE) (2004).