Hartline, Beverly; Diamond, Bill; Leemann, Christoph; Grunder, Hermann; Mougey, Jean; Bisognano, Joseph et al. The Continuous Electron Beam Accelerator Facility, article, April 1, 1987; (https://digital.library.unt.edu/ark:/67531/metadc931487/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .