United States. Department of Energy. Nevada Operations Office. Remedial Action Work Plan Amchitka Island Mud Pit Closures, report, April 5, 2001; (https://digital.library.unt.edu/ark:/67531/metadc723776/m1/1/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .