Ackermann, Brandon, Craig M. Lee, David McWethy, Nathan Chellman, and Joe McConnell. “An Application of Ground-Penetrating Radar at a Greater Yellowstone Area Ice Patch”. Journal of Glacial Archaeology 5 (August 15, 2021): 73–84. Accessed November 21, 2024. https://journal.equinoxpub.com/JGA/article/view/19883.