- 2020 - 2023 The Use of Justice in Traditional Societies: A Comparative Legal History of East and West through Empirical Analysis of User Behavior
- 2013 - 2016 The Chinese Society in Qing and its Lawsuit and Trial as Seen from the Ba County Archives -- A Further Review of the Image of the Chinese Society
- 2008 - 2010 Reorientation of Notary-system from legal comparative point of view-the past, present and future of legal profession
- 2006 - 2009 A Study of the Litigious Chinese Society in East Asian History
- 2004 - 2008 伝統中国刑事裁判における成文法の役割
- 2004 - 2008 The role of codified laws in the criminal justice of traditional China
- 2002 - 2006 伝統中国の契約の性質
- 2002 - 2006 The nature of contract in traditional China
- 2002 - 2005 Law and Modernization of the East Asia Society
- 2003 - 2004 清代法律書籍(とりわけ律註釈書)の出版政策
- 1999 - 2000 Formation, Development and Transformation of the Modern Law - Comparative Studies of Europe, China and Japan -
- 1995 - 1997 The historical research on the leagal statuses and privileges of the bureaucrats in pre-modern China
- 1993 - 1993 清代における土地紛争の実態分析
- 1987 - 1987 『淡新档案』行政編の整理読解と同文書全体の編年的研究
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