D. Kolokontes, Argyrios, Achilleas Kontogeorgos, Efstratios Loizou, and Fotios Chatzitheodoridis. “Input-Output Models and Derived Indicators: A Critical Review”. Scientific Annals of Economics and Business 66, no. 3 (September 30, 2019): 267 –. Accessed January 17, 2022. http://saeb.feaa.uaic.ro/index.php/saeb/article/view/1137.