^Carpenter, Susan. Why Japan Can't Reform: Inside the System. Palgrave Macmillan/Springer Publishers, 2008. ISBN 0230595065, 9780230595064. p. 12. Same content appears in: Carpenter, Susan. Japan's Nuclear Crisis: The Routes to Responsibility. Springer Publishers, December 12, 2011. ISBN 0230363717, 9780230363717. p. 34.
External linksedit
Ministry of Transport at the Wayback Machine (archive index)
Ministry of Transport at the Wayback Machine (archive index) (in Japanese)