Barish, J.; Santoro, R.T.; Alsmiller, F.S. & Alsmiller, R.G. Jr. TRAPP, A COMPUTER PROGRAM FOR THE TRANSPORT OF ALPHA PARTICLES AND PROTONS WITH ALL NUCLEAR-REACTION PRODUCTS NEGLECTED., report, January 1, 1972; (https://digital.library.unt.edu/ark:/67531/metadc1032424/m1/1/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .