1. Miyagiken no hisai jokyo to sono taio—Sendaishi wo chushin ni;Yamazaki;Japanese Journal of Geriatric Psychiatry,2012
2. Todofuken betsu jinko;Statistics Bureau, Ministry of Internal Affairs and Communications,2012
3. Heisei 24 nenban koreishakai hakusho (Gaiyo ban);Cabinet Office, Government of Japan,2012
4. III Higashinihon daishinsai kankei todofuken tokei data;Ministry of Agriculture, Forestry and Fisheries,2012
5. Denryoku gaisha no dengen kosei;Honkawa Data Tribune,2012