Stewart, C., Damby, D., TomaĊĦek, I., Horwell, C., Plumlee, G., Armienta, M., Hinojosa, M., Appleby, M., Delmelle, P., Cronin, S., Ottley, C., Oppenheimer, C., & Morman, S. (2020). Assessment of leachable elements in volcanic ashfall: A review and evaluation of a standardized protocol for ash hazard characterization. Journal of Volcanology and Geothermal Research, 392, Article 106756. https://doi.org/10.1016/j.jvolgeores.2019.106756