Freund, H. Electron-Beam Sources of High-Brightness Radiation. SPIE Digital Library.
Cita Chicago Style (17a ed.)Freund, Henry. Electron-Beam Sources of High-Brightness Radiation. SPIE Digital Library.
Cita MLA (8a ed.)Freund, Henry. Electron-Beam Sources of High-Brightness Radiation. SPIE Digital Library.
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