@book{33887,
	author = {Hoover, Richard, ed.},
	title = {X-Ray Optics, Instruments, and Missions II},
	publisher = {SPIE},
	year = {1999},
	series = {Proceedings of SPIE; V. 3766},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/3766}
}