@book{33876,
	author = {Freund, Andreas, ed.},
	title = {X-Ray Mirrors, Crystals, and Multilayers},
	publisher = {SPIE},
	year = {2001},
	series = {Proceedings of SPIE; V. 4501},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/4501}
}