1. Dipartimento di Economia e Management, University of Pisa, Via Ridolfi 10, Pisa, Italy
2. Department of Economic Geography—Urban and Regional Research Centre Utrecht (URU), Utrecht University, Heidelberglaan 2, TC Utrecht, The Netherlands
3. Universidad Nacional de Córdoba, Facultad de Ciencias Económicas, Av. Valparaíso S/N, Ciudad Universitaria, X5000HRV Córdoba, Argentina