2015 - 2018 Research on the complex character of medieval historical documents and shared knowledge and transmission
2014 - 2018 An Integrated Research of Humanities and Informatics for Shared Resources and Multiple Analyses on the Experience-based Knowledge of Historical Letters
2013 - 2017 The creation of a collaborative, computer-supported transcribing system for medieval Japanese documents
2012 - 2016 a comprehensive study on pictorial maps drawn at medieval Japan by image analysis and historic geographical method
2012 - 2016 Advancement of research of Documents of Todaiji temple with restoration method
2009 - 2012 Re-thinking the study of medieval Japanese documents through the construction and use of a computer supported cooperative work system
2008 - 2011 A Developing Study for Japanese-Estate-Maps' Information System(JEMIS) based-on their analysis and field surveys
2006 - 2008 The study of the low enforcement system
2005 - 2008 Making The Union Catalogue of Japanese Historical Documents
2005 - 2008 Research for Building an Environment to Enhance International Use of Premodern Japanese Historical Sources
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Papers (25):
西田 友広. 北条義時の「大倉亭」. 鎌倉遺文研究. 2020. 46. 51-59
西田 友広. 東大寺宝珠院所蔵絵図の名称について. 2019. 87. 19-21
Reproduction and commentary on the Documents of the Yoshimi Family in the Collection of Osaka Aoyama Museum of History and Literature. 大阪青山大学紀要 = Journal of Osaka Aoyama University. 2019. 11. 19-40
[Research Materials] An Introduction to the Newly Found Medieval Documents in the Possession of Mr. Minoru Masuda. 2018. 212. 101-165
西田 友広. A reexamination of the legal dictum "No criminal investigation without litigation". 史学雑誌. 2018. 127. 8. 1289-1305
西田 友広. Book Reviews : NAGAMURA Yoshitomo, Medieval Relationship between the Imperial Court and the Bakufu and the Jokyu Disturbance. 日本史研究 = Journal of Japanese history. 2016. 651. 35-41
The Structure and Daily Life of Landed Estates - Exploring the Medieval Period in Matsue
Matsue-city community development department, Historical Documents Research Division 2021 ISBN:9784904911747
Medieval Japan’s crackdown on banditry: Maintenance of peace and order by the Kamakura shogunate
Yoshikawa Kobunkan 2017 ISBN:9784642083133
THE HISTORICAL SCIENCE SOCIETY OF JAPAN
, SOCIETY FOR THE STUDY OF DIPLOMATICS IN JAPAN
, KAMAKURA-IBUN RESEARCH ASSOCIATION
, THE JAPANESE SOCIETY FOR HISTORICAL STUDIES
, THE HISTORICAL SOCIETY OF JAPAN