- 2006 - 2008 Theoretical and practical research on the reform of administrative litigation system
- 2003 - 2004 The Demonstrative and Synthetic Studies on Legislative Research Services in the Changing Era
- 2002 - 2004 Studies on the Reform of Administrative Litigation System
- 2001 - 2002 THE LEGISLATIVE PROCESS AND ENFORCEMENT SITUATION IN RESPECT OF LAWS TO REFORM THE MECHANISMS OF GOVERNMENT AND INSPECTION OF THE "LEGISLATIVE FACTS"
- 2000 - 2001 A Research of the Reform of the Governmental Structure
- 1998 - 2000 The empirical comprehensive research on the legislative reforms in the current changing situation
- 1998 - 1999 Theoretical and practical Analysis concerning the Decentralization Return
- 1995 - 1997 Study on the enforcement of the Administrative Procedire Law and administrative procedure and modern administrative procedure
- 1989 - 1990 都市圏における水の再利用システム
- 1988 - 1989 都市圏にとける水の再利用システム
- 1987 - 1988 都市圏における水の再利用システム
- 1985 - 1986 The Analysis for the postwar Tokyo Metropolitan Administration
- 行政政策過程に関する法
- Law of Administrative Policy Process
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