@book{30278,
	author = {O'Dell, Stephen, ed.},
	title = {Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV},
	publisher = {SPIE},
	year = {2009},
	series = {Proceedings of SPIE; V. 7437},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7437}
}