1.Aharony, J. and I. Swary, 1980 ,Quarterly Dividend and Earnings Announcements and Stockholders' Returns: An Empirical Analysis, The Journal of Finance 35 (March), 1-12.
4.Beaver, W. H., R. Clarke, and W. F. Wright, 1979, The Association Between Unsystematic Security Returns and the Magnitude of Earnings Forecast Errors, Journal of Accounting Research 17(2), 316-340.
5.Bernard, V. L., and J. K. Thomas, 1989, Post-earnings-announce drift: Delayed price response or risk premium?, Supplement to the Journal of Accounting Research 27, 1-36.