EINZIG, P. What are leads and lags?. PSL Quarterly Review, [S. l.], v. 20, n. 83, 2014. DOI: 10.13133/2037-3643/11706. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/11706. Acesso em: 9 apr. 2025.