CHI, Y. N. . Triple Hurdle Model with Zero Expenditures. Quarterly Journal of Econometrics Research , [S. l.], v. 4, n. 1, p. 1–9, 2018. DOI: 10.18488/journal.88.2018.41.1.9. Disponível em: https://archive.conscientiabeam.com/index.php/88/article/view/2563. Acesso em: 22 dec. 2024.