Νιάρχος Ν. Α., and Αλεξάκης Χ. Α. “The Predictive Power of Macroeconomic Variables on Stock Market Returns: The Case of the Athens Stock Exchange”. SPOUDAI Journal of Economics and Business, vol. 50, no. 1-2, Jan. 2000, pp. 74-86, http://spoudai.org/index.php/journal/article/view/497.