1. Cabinet Office, 2011. 〈http://www.bousai.go.jp〉 “Estimate of the Cost of Damage in the 2011 off the Pacific coast of Tohoku Earthquake Disaster” 2011.6.24. (in Japanese).
2. East Japan Railway Company, 2011a. April 27 Announcement Regarding the Effect of the 2011 off the Pacific coast of Tohoku Earthquake Disaster and Difference in Projected Operating Results, http://www.jreast.co.jp/investor/financial/2011/pdf/kessan_03.pdf. (in Japanese).
3. East Japan Railway Company, 2011b. Main Damage and Status of Restoration of the Above Ground Facilities of the Tohoku Shinkansen (as of April 17, 2011), JR-EAST HP:http://www.jreast.co.jp/pdf/restore02.pdf. (in Japanese).
4. East Japan Railway Company, 2011c. Main Damage and Status of Restoration of the Above Ground Facilities of Regular Train Lines (as of April 17, 2011), JR-EAST HP: http://www.jreast.co.jp/pdf/restore.zairai.0.2.pdf. (in Japanese).
5. East Japan Railway Company, 2011d. Main Damage and Status of Restoration of the 7 Lines Affected by the Tsunami (as of April 17, 2011), JR-EAST HP: 〈http://www.jreast.co.jp/pdf/check.pdf〉. (in Japanese).