@book{29083,
	author = {Winston, Roland, ed.},
	title = {Nonimaging Optics and Efficient Illumination Systems II},
	publisher = {SPIE},
	year = {2005},
	series = {Proceedings of SPIE; V. 5942},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/5942}
}