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- [1] DIFFERENTIAL CROSS-SECTIONS FOR THE ELECTRON-IMPACT EXCITATION OF HE-LIKE IONS - 21S-STATES AND 21P-STATES PHYSICAL REVIEW A, 1989, 40 (07): : 3646 - 3650
- [6] DIFFERENTIAL CROSS-SECTIONS FOR ELECTRON-IMPACT EXCITATION OF HYDROGENLIKE IONS PHYSICAL REVIEW A, 1989, 40 (02): : 599 - 603
- [10] DIFFERENTIAL AND INTEGRAL CROSS-SECTIONS FOR EXCITATION OF 2(1S),2(3S) AND 2(3P) STATES OF HE BY ELECTRON-IMPACT AT 29.6 AND 40.1 EV PHYSICAL REVIEW A, 1973, 8 (01): : 191 - 203