1. Abe, K. (1991): A Study on the Urban Systems of Japan (Nihon No Toshi Taikei Kenkyu). Chijin Shobo.*
2. Abe, K. (1996): A Study of the Urban Systems of the Advanced Countries (Senshinkoku No Toshi Taikei Kenkyu). Chijin Shobo.*
3. Abe, K. (2001): A Study on the Urban Systems of the Developing Countries (Hatten Tojokoku No Toshi Taikei Kenkyu). Chijin Shobo.*
4. Abe, K. (2005): The evolution of the Korean urban system from the standpoint of large private firms' head and branch offices: 1985-2002. The Geography Reports, 101, 1-10.*
5. Abe, K. (2009): Major cities and urban systems of France from the standpoint of large private firms' head and branch offices. Bulletin of Aichi University of Education, 58, 133-140.