Institution: | (1) Department of Quantitative Methods, Brescia University, Contrada S.Chiara, 50, Brescia, Italy;(2) Department of Mathematics, Statistics, Informatics and Applications, Bergamo University, Piazza Rosate, 2, Bergamo, 24129, Italy;(3) Department of Applied Mathematics, Kazan University, ul. Kremlevskaya,18, Kazan, 420008, Russia;(4) A.G.Anderson Graduate School of Management, University of California, Riverside, CA 92521, USA |