1. For example, see a review article by E.J. Stephenson, Colloq. Phys. C 6 (1990) 85.
2. M. Fujiwara et al., RCNP Annual Report 1987, pp. 160.
3. M. Fujiwara, S. Morinobu, M. Yosoi, H. Ikegami, in: N. Anantaraman, B. Sherrill (Eds.), Proc. Int. Conf. on Heavy Ion Research with Magnetic Spectrographs, National Superconducting Cyclotron Laboratory, Technical Report No. MSUCL-685, 1989, p. 283.
4. S. Morinobu, private communication.
5. H.A. Enge, S.B. Kowalski, Proc. Int. Conf. on Magent Technology, Hamburg (1970) p. 366.