STERN, R. World market instability in primary commodities. PSL Quarterly Review, [S. l.], v. 29, n. 117, 2014. DOI: 10.13133/2037-3643/11498. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/11498. Acesso em: 19 may. 2024.