Herndon, J. Marvin, and Mark Whiteside. “Further Evidence of Coal Fly Ash Utilization in Tropospheric Geoengineering: Implications on Human and Environmental Health”. Current Perspectives to Environment and Climate Change Vol. 1 (August 22, 2019): 118-126. Accessed June 19, 2026. https://stm1.bookpi.org/index.php/cpecc-v1/article/view/305.