Alabanos, N., and S. Theodoropoulos. “A Key-Point Comparison & The New Challenges for the Existent Administrative Burden Models (A.B.M’s)”. SPOUDAI Journal of Economics and Business, vol. 66, no. 1-2, Sept. 2016, pp. 32-45, http://spoudai.org/index.php/journal/article/view/184.