United States. Federal Communications Commission. FCC Record, Volume 15, No. 3, Pages 1205 to 1858, Supplement, book, 2000; (https://digital.library.unt.edu/ark:/67531/metadc2992/m1/1/: accessed March 29, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .