6Bartov, E., F. Gul, and J. Tsui., 2000, Discretionary-accruals models and audit qualifications,Journal of Accounting and Economics (December) :421-452.
7Becker,C.,M. Defond,J. Jiambalvo,and K.Subramanyam,1998,The effect of audit on earnings management, Contemporary Accounting Research 15(Spring) : 1-24.
8Bonner,S.,and B. Lewis, 1990,Determinants of auditor expertise,Journal of Accounting Research(28) : 1-28.
9Defond, M.,and K. Subramanyam, 1998,Auditor change and discretionary accruals, Journal of Accounting and Economics 25(February) :35-68.
10Francis,J.,E. Maydew, and H. Sparks, 1999,The role of Big 6 auditor in the credible reporting of accruals,Auditing:A Journal of Practice & Theory 18(Fall) : 17-34.