1. [1] S. Osaki, ed., Stochastic Models in Reliability and Maintenance, Springer, Berlin, 2002.
2. [2] H. Pham, ed., Handbook of Reliability Engineering, Springer, London, 2003.
3. [3] T. Nakagawa, Maintenance Theory of Reliability, Springer, London, 2005.
4. [4] T. Nakagawa, Advanced Reliability Models and Maintenance Policies, Springer, London, 2008.
5. [5] T. Sugiura, S. Mizutani, and T. Nakagawa, “Optimal random replacement policies,” Tenth ISSAT International Conference on Reliability and Quality Design, pp.99-103, 2004.