4Basu, S. 1997. The Conservatism Principle and the Asymmetric Timeliness of Earning. Journal of Accounting and Economics, (24) : 3 -37.
5Ball R. , A. Robin, and J. Wu. 2003. Incentives versus Standards: Properties of Accounting Income in Four East Asian Countries. Journal of Accounting & Economics, 36 : 235 - 270.
6Watts, R. 2003a. Conservatism in Accounting Part Ⅰ: Theory and Implications. Accounting Horizon, 17 (3) : 207 - 21.
7Watts, R. 2003b. Conservatism in Accounting Part Ⅱ: Evidence and Research Opportunities. Accounting Horizon, 17 (4) 287 - 301.