Rossotti A, Carrasco-Núñez G. Stratigraphy of the 8.5 – 9.0 ka B.P. Citlaltépetl pumice fallout sequence. revmexcg [Internet]. 2018 May 9 [cited 2025 May 2];21(3):353-70. Available from: https://www.rmcg.unam.mx/index.php/rmcg/article/view/881