1. Asaba, Y. (2008) ‘Three-tier Model of Linkage Failure in Duverger’s Law: Regionalism in Korean Parliamentary Elections in Comparative Perspectives’, Senkyo Kenkyu [Japanese Journal of Electoral Studies], vol. 23, pp. 112–126.
2. Asaba, Y. (2010) ‘Syusyou-ga iru kankoku-no daitouryousei: syusyou-no kainin-ninmei-wo meguru daitouryou-to gikai-no kankei [Korean Presidency with Prime Minister: Presidentialism by Constitutional Design, but Semi-presidentialism in Practice]’, in Y. Yoshikawa (ed.), Minsyuka katei-no senkyo: chiiki kenkyuu-kara mita seitou-kouhosya-yuukensha [Elections in Democratization: Parties, Candidates and Voters from Area Studies Perspectives] (Ootsu: Kohrosha), pp. 41–64.
3. Asaba, Y. (2011) ‘Kankoku-ni okeru seitou sisutemu-no henyou [Changes in the Korean Party System]’, in M. Iwasaki (ed.), Seitou sisutemu-no riron-to jissai [Theory and Cases of Party System] (Tokyo: Oufuu), pp. 255–282.
4. Asaba, Y., Y. Onishi and I. Haruki (2010) ‘Kankoku-ni okeru senkyo saikuru fuicchi-no seitou seiji-heno eikyou [President Lee Myung-bak’s Government Formation in Korea: a Missing Link of Electoral Cycle in Party Politics]’, Revaiasan [Leviathan], vol. 47, Autumn, pp. 65–88.
5. Asaba, Y., Y. Onishi and M. Tatebayashi (2010) ‘Loser’s Disconsent in Korean Presidential Primary: Separation of Powers, Electoral Cycles, and Party Organization’, Senkyo Kenkyu [Japanese Journal of Electoral Studies], vol. 26, no. 2, pp. 53–66.