悬赏 30 个论坛币 已解决
1.Grinold, Richard C. “The Fundamental Law Of Active Management”. Journal of Portfolio Management, pages 30–37, 1989.
2.Goodwin, Thomas. “The Information Ratio”. Financial Analysts Journal, pages 34–43, 1998.
3.Thomas,Lee R. 2000 "Active management". Journal of Portfolio Management, vol.26,no.2(winter):25-32