@book{29246,
	author = {Koshel, R. John, ed.},
	title = {Novel Optical Systems Design and Optimization X},
	publisher = {SPIE},
	year = {2007},
	series = {Proceedings of SPIE; V. 6668},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6668}
}