David J. Crennell, William C. Delaney, Enzo Flaminio, Uri Karshon, Kwan Wu Lai, Wesley J. Metzger, John S. O'Neall, J. Michael Scarr, Alan M. Thorndike, Philip Baumel, Robert M. Lea, Alexander Montwill, and Thomas G. Schumann
Phys. Rev. Lett. 21, 648 (1968) – Published 26 August 1968