@book{25504,
	author = {O'Shea, Patrick, ed.},
	title = {Free-Electron Laser Challenges},
	publisher = {SPIE},
	year = {1997},
	series = {Proceedings of SPIE; V. 2988},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2988}
}