First Author:   Oscar Claveria AQR-IREA, University of Barcelona oclaveria@ub.edu   Diagonal, 690 Barcelona, 08034, Spain   +34-934021825(Phone) +34-934021825(Fax) https://webgrec.ub.edu/webpages/000005/ang/oclaveria.ub.edu.html Second Author: Petar Sorić University of Zagreb psoric@efzg.hr   Zagreb, 10000, Croatia   +385-12383367(Phone)   https://www.efzg.unizg.hr/departments/statistics/faculty/petar-soric-phd/32549