CLARK, C. Is there a long cycle?. PSL Quarterly Review, [S. l.], v. 37, n. 150, 2013. DOI: 10.13133/2037-3643/10785. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/10785. Acesso em: 5 may. 2024.