Nonlinearity of demand for basic grains imports: evidence from a regime-switching model. Panorama Económico, [S. l.], v. 17, n. 35, p. 145–163, 2021. DOI: 10.29201/peipn.v17i35.98. Disponível em: https://www.revistapanoramaeconomico.mx/index.php/PE/article/view/98. Acesso em: 22 mar. 2026.