1. H. Homeyer, in: J.C. Cornell (Ed.), Proc. 14th Int. Conf. on Cyclotrons and their Applications, Cape Town, South Africa, World Scientific, Singapore, 1995, p. 70
2. S. Sato, Proc. Int. Conf. on Evolution in Ion beam Applications, Takasaki, Japan, 1991, p. 239
3. J.C. Cornell (Ed.), Proc. 14th Int. Conf. on Cyclotrons and their Applications, Cape Town, South Africa, 1995
4. W. Bohne, J. Röhrich, G. Röschert, these proceedings (ECAART-5), Nucl. Instr. and Meth. B 139 (1998) 219
5. Obtained from the Heinrich Hertz Institut Berlin GmbH, AG Elektrolumineszenz, D-10117 Berlin, Germany