Affiliation: | 1.Department of Economics and Management, University of Brescia, via S. Faustino, 74/b, Brescia, 25122, Italy ;2.Department of Management, Economics and Quantitative Methods, University of Bergamo, via dei Caniana, 2, Bergamo, 24127, Italy ;3.Department of System Analysis and Information Technologies, Kazan Federal University, ul. Kremlevskaya, 18, Kazan, 420008, Russia ;4.Department of Economics and Management, University of Brescia, via S. Faustino, 74/b, Brescia, 25122, Italy ; |