Herndon, J. Marvin. “Origin of Earth’s Magnetic Field, Its Nature and Behavior, Geophysical Consequences, and Danger to Humanity: A Logical Progression of Discoveries Review”. European Journal of Applied Sciences 10, no. 6 (December 21, 2022): 529–562. Accessed June 17, 2024. https://journals.scholarpublishing.org/index.php/AIVP/article/view/13684.