VELASCO-HERNÁNDEZ, Mauro; LUCERO-ARELLANO, Mario R. SHORT NOTE - New locality of the Matzitzi Forniation in the Calapa river, in the boundary area between Oaxaca and Puebla states, Mexico. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 13, n. 1, p. 123–127, 2019. Disponível em: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1146. Acesso em: 20 apr. 2025.