Akgun, A. I., F. Samiloglu, and A. O. Oztop. “The Impact of Profitability on Market Value Added: Evidence from Turkish Informatics and Technology Firms”. International Journal of Economics and Financial Issues, vol. 8, no. 4, July 2018, pp. 105-12, https://www.econjournals.com/index.php/ijefi/article/view/6666.