Johnson, Rolland. Final Technical Report on STTR Project DE-FG02-02ER86145 Pressurized RF Cavities for Muon Ionization Cooling, report, July 13, 2006; (https://digital.library.unt.edu/ark:/67531/metadc891931/m1/1/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .