Λυρούδη Κ., Νούλας Α. Γ., and Κομισόπουλος Γ. “The Day-of-the Week Effect in the Athens Stock Exchange”. SPOUDAI Journal of Economics and Business, vol. 52, no. 4, Oct. 2002, pp. 69-87, https://spoudai.org/index.php/journal/article/view/468.