1. See also C. Baltay, E. C. Fowler, J. R. Sanford, J. Sandweiss, H. N. Brown, W. B. Fowler, and M. Webster, Brookhaven National Laboratory, Report C-29 (unpublished).
2. W. J. Fickinger, J. Sandweiss, and J. R. Sanford, Brookhaven National Laboratory internal report (unpublished).
3. Particle Production by 10-30 Bev Protons Incident on Al and Be
4. Proc. of the Intern. Conf. on High-Energy Physics;Cocconi,1960