- 2017 - 2020 Comparative Study on Town Planning and Regional Planning in Britain and Germany during the First Half of the Twentieth Century
- 1995 - 2020 比較近現代都市史
- 2013 - 2016 Study of Contemporary City's Governance from the Perspective of Comparative History: Cases of Japan, Germany and Britain
- 2009 - 2011 "Urban policy functioning as social policy(Sozialpolitische Stadtpolitik)" from the perspective of conceptual and comparative history
- 2007 - 2008 Historical Study on the publicness of the German "social city" with particular focus on the relationship with the "social state"
- 2004 - 2005 COMPARATIVE STUDY ON TOWN PLANNING AND URBAN ADMINISTRATION SYSTEM OF GREAT BRITAIN AND GERMANY IN THE LATE NINETEENTH AND EARLY TWENTIETH CENTURIES
- 1993 - 2002 ドイツ近代経済史
- 1993 - 2002 Economic History of Modern Germany
- 2000 - 2001 Comparative Historical Study on the Relation of the Modern Cities to the State
- 1998 - 2000 A Historical comparative Study of the Mutual Relations between Regional Industrialization
- 1998 - 1999 A Comparative Study on the History of Urbanization, Urban Problems and Municipal Policy in Japan and Germany
- Urban History of Modern Germany
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