SPESSO, R. The sliding scale system in Italy. PSL Quarterly Review, [S. l.], v. 5, n. 23, 2014. DOI: 10.13133/2037-3643/12726. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/12726. Acesso em: 18 apr. 2025.