The Effects of Stock Splits on Stock Prices, Liquidity and Stock Ownership : Evidence from Japan (jointly worked). 2004
Price and Volume Effects Associated with a Change in the Nikkei 225 Index List: New Evidence from the Big Change on April 2000 (jointly worked). International Finance Review. 2003. 4. 199-225
Employees and Corporate Finance : Analyses of Corporate Pensions and Employee Stock Options. Hitotsubashi University Research Series, Commerce & Management. 2000. 41. 67-134