HEINE, Klaus. Paleopedological evidence of human-induced environmental change in the Puebla – Tlaxcala area (Mexico) during the last 3,500 years. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 20, n. 3, p. 235–244, 2018. Disponível em: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/923. Acesso em: 11 apr. 2025.