9Li, K., McNally, W. J.. The Decision to Repurchase, Announcement Returns and Insider Holdings: A Conditional Event Study. Journal of Applied Finance, 2003, (9): 55-70.
10Bray, h., Graham, J.R., Harvey, C.R., R. Michacly. Payout Policy in the 21st Century. Journal of Financial Economics, 2005,77(3):483-527.