1. L. E. Collins, P. A. O'Connell, J. G. Perkins, F. R. Pontet and P. T. Stroud, these Proceedings.
2. A. Tinsley, to be published.
3. G. Brown and M. L. Renton, these Proceedings.
4. The development of magnetic ion sources for an electromagnetic isotope separator
5. Proc. Intern. Symp. Isotope separators;Sidenius,1961