1. Department of Economics and Economic Policy, Faculty of Theoretical and Applied Economics, The Bucharest University of Economic Studies, Romana Square, No. 6, 010374 Bucharest, Romania
2. Centre for Industry and Services Economics, “Costin C. Kiritescu” National Institute for Economic Research, Romanian Academy, Calea 13 Septembrie No. 13, District 5, 050711 Bucharest, Romania
3. Department of Economics and Business Administration, Faculty of Economics, “Constantin Brâncuși” University of Târgu-Jiu, Tineretului Street, No. 4, Târgu-Jiu, Gorj, Romania
4. Economic Development and Social Sustainability Research Group (EDaSS), Department of Economic Analysis and Business Administration, Faculty of Economics and Business, Universidade da Coruna, A Coruña 15071, Spain