Πολλάλης Γ. Α., M. Gartenberg, and B. Edmunds. “Applying the Balanced Scorecard Methodology in the Public Sector: The Case of the Department of Defense in the United States”. SPOUDAI Journal of Economics and Business, vol. 54, no. 1, Jan. 2004, pp. 33-58, https://spoudai.org/index.php/journal/article/view/411.