Roca, Amilcar, Edgar Roberto Mérida Boogher, Carla Maria Fernanda Chun Quinillo, Dulce María Esther González Domínguez, Gustavo Adolfo Chigna Marroquin, Francisco Javier Juárez Cacao, and Peter Darwin Argueta Ordoñez. “Volcano Observatories and Monitoring Activities in Guatemala”. Volcanica 4, no. S1 (November 1, 2021): 203–222. Accessed November 28, 2021. https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/66.