2Brown, S., Lo, Kin., Lys T.,1999. Use of R^2 in ac- counting research: measuring changes in value rele- vance over the last four decades. Journal of Accounting and Economics 28:83-115.
3Collins, D.W, Kothari,S.P. 1989,An Analysis of In- tertemporal and Cross-sectional of Earnings Response Coefficient. Journal of Accounting and Economics. 11: 143-182.
4Sloan, R.1996. Do Stock Prices Fully Reflect Infor- mation in Accruals and Cash Flow about Future Earn- ings? The Accounting Review 7:289-316.