Stearns, J. W.; Berkner, K. H. & Pyle, R. V. Neutral-beam design options. [Design and cost optimization], article, April 1, 1976; (https://digital.library.unt.edu/ark:/67531/metadc1450193/m1/2/: accessed May 23, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .