RONCAGLIA, A. Garegnani and the surplus approach. PSL Quarterly Review, [S. l.], v. 78, n. 315, p. 455–468, 2026. DOI: 10.13133/2037-3643/19117. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/19117. Acesso em: 5 sep. 2026.