Fukawa, Tetsuo, and Takashi Oshio. “Income Inequality Trends and Their Challenges to Redistribution Policies in Japan”. Journal of Income Distribution® 16, no. 3-4 (November 20, 2007): 9. Accessed April 24, 2024. https://jid.journals.yorku.ca/index.php/jid/article/view/7228.