Specification Procedure For Symmetric Smooth Transition Autoregressive Models. Communication In Physical Sciences, [S. l.], v. 12, n. 2, p. 162–174, 2025. DOI: 10.4314/5mg99d17. Disponível em: https://journalcps.com/index.php/volumes/article/view/60. Acesso em: 30 jun. 2026.