@article{oai:nagoya.repo.nii.ac.jp:00011771,
 author = {小田, 寛貴 and Oda, Hirotaka and 秋山, 晶則 and Akiyama, Masanori},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {This paper reports the radiocarbon age of an ancient document "Minamoto no Yoritomo Sodehan Migyosho". The document descended to the Matsugi family which had controlled the craftsmen of metal casting since the Warring State Period. The content of the document is about the formal recognition of their authority over the craftsmen by Minamoto no Yoritomo who established the first military government in AD 1192. Although the document has the description of written age, AD1189, the paleographical views suggested that the document is a counterfeit written in several centuries later. The calibrated radiocarbon age also indicated that the document was forged in the 16th century or the first half of the 17th century. However, it is possible that the document was written on an old-paper sheet; accordingly, there is room for further investigation to determine the accurate forged age., タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 2004 (平成16)年度},
 pages = {198--205},
 title = {加速器質量分析法による「源頼朝袖判御教書」の ^<14>C年代測定(タンデトロン加速器質量分析計業績報告2004(平成16)年度)},
 volume = {16},
 year = {2005}
}