Martini, Michelangelo, Luca Ferrari, Margarita López-Martínez, and Victor Valencia. “Stratigraphic Redefinition of the Zihuatanejo Area, Southwestern Mexico”. Revista Mexicana de Ciencias Geológicas 27, no. 3 (February 17, 2014). Accessed April 18, 2025. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/284.