Dunn, D.L.; Winn, W.G. & Bresnahan, P.J. Mapping radionuclide distribution in surface sediments using GIS and an underwater HPGe detector, article, September 1, 1996; (https://digital.library.unt.edu/ark:/67531/metadc676031/m1/1/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .