Loda, G K & Lindstrand, R A. Development of spark cathode electron guns for the CO/sub 2/ laser fusion program. Final report, July 1978-December 1979, report, January 1, 1980; (https://digital.library.unt.edu/ark:/67531/metadc1092187/m1/1/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .