1. Proc. 2nd Int. Conf. on Ion Sources;Takagi,1972
2. Ionized‐cluster beam deposition
3. Proc. 6th Int. Vacuum Congr.;Takagi,1974
4. Proc. 2nd Symp. on Ion Sources and the Formation of Ion Beams;Takagi,1974
5. 5th Symp. on Fusion Technology;Burrows,1968