7Ashbaugh- Skaife, H., D. W. Collins, W. R. Kin- ney Jr. , and R. LaFond. 2009. The Effect of SOX Internal Control Deficiencies on Firm Risk and Cost of Equity. Journal of Accounting Research, 47 ( 1 ) : 1 - 43.
8Beaver, W., and J. Manegold. 1975. The Associationbetween Market - determined and Accounting - determined Measures of Systematic Risk: Some Further Evidence. Journal of Financial and Quantitative Analysis, 10 (2) : 231 N284.
9Bowman, R. G. 1979. The Theoretical Relationship be- tween Systematic Risk and Financial (Accounting) Variables. The Journal of Finance, 34 (3) : 617-630.
10Brown, G., and N. Kapadia. 2007. Firm -specific Risk and Equity Market Development. Journal of Financial Eco- nomics, 84 (2): 358 -388.