Millsap, William J. & Brush, Daniel J. Radiological Assessment for the Removal of Legacy BPA Power Lines that Cross the Hanford Site, article, November 13, 2013; (https://digital.library.unt.edu/ark:/67531/metadc871756/m1/4/: accessed May 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .