RIVERA GUTIÉRREZ, N. L. Sky characterization Copan 400 to 900 AD. Ciencias Espaciales, [S. l.], v. 4, n. 2, p. 42–66, 2016. DOI: 10.5377/ce.v4i2.2544. Disponível em: https://camjol.info/index.php/CE/article/view/2544. Acesso em: 19 oct. 2024.