5Bernard, V.L., 1995. The Feltham-Ohlson framework:Implications for empiricists. Contemporary Accounting Research, 11:733-747.
6Ball, R.J. and P.Brown, 1968. An Empirical Evaluation of Accounting Income Numbers. Journal of Accounting research (Autumn) ,159-178.
7Feltham, G. and J.Ohlson, 1995. Valuation and Clean Surplus Accounting for Operating and Financial Activities. Contemporary Accounting Research (Spring) ,689-731.
8Barth,M.,1991. Relative Measurement Errors Among Alternative Pension Asset and Liability Measures. Accouting Review (July) ,433-463.
