...
H. Koivisto, J. Ärje and M. Nurmia, Metal ion beams from an ECR ion source using volatile compounds, Nucl. Instr. and Meth. in Phys. Res., B94, (1994), p.291.
...
H. Koivisto, J. Ärje and M. Nurmia, Metal ion beams from an ECR ion source using volatile compounds, Nucl. Instr. and Meth. in Phys. Res., B94, (1994), p.291.