Samadiyan , Behnam, Narjes pooryeganeh, Hadi Ebrahimi, and Yousef Ghanbari. 2013. “Relative and Differential Information Content of Economic Value Added, Earnings, Operating Cash Flow and Stock Return”. International Journal of Asian Social Science 3 (1):29-37. https://archive.aessweb.com/index.php/5007/article/view/2400.