Boularhmane, Ilham, and Rajae Aboulaich. “Valuation of Quarterly Stock Prices: Applying Ethical Principles to Discounted Cash Flow Method”. International Journal of Economics and Financial Issues, vol. 6, no. 3, July 2016, pp. 1254-61, https://econjournals.net.tr/index.php/ijefi/article/view/1953.