1. 1) Ohori, K. : A study on natural disaster risk finance in railway business; ruin probability and the application, Transport Policy Studies’ Review, Vol. 18 (2), pp. 69-73, 2015. (in Japanese)
2. 2) Ohori, K. and Morichi, S. : Ruin probability on natural disaster risk finance in the railway business, Journal of Japan Society of Civil Engineers. F4, Vol. 72, No. 2, pp. 63-72, 2016. (in Japanese)
3. 3) Ohori, K. : A study on natural disaster risk finance: Historical review and fundamental analysis, Transport Policy Studies’ Review, Vol. 19, No. 2, pp. 33-37, 2016. (in Japanese)
4. 4) Uchida, S., Hirata, T., Matsuno, Y., Yoon, J. and Morichi, S. : Current status and issues of risk financing and role of public sector for post-disaster restoration of transportation facilities, Transport Policy Studies’ Review, Vol. 12, No. 2, pp. 66-72, 2009. (in Japanese)
5. 5) Morichi, S. : Institutional issues of infrastructure at risk, JSCE Magazine, Vol. 94, No. 8, pp. 38, 2009. (in Japanese)