@book{24949,
	author = {Freund, Henry, ed.},
	title = {Electron-Beam Sources of High-Brightness Radiation},
	publisher = {SPIE},
	year = {1993},
	series = {Proceedings of SPIE; V. 2013},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2013}
}