@book{29092,
	author = {Winston, Roland, ed.},
	title = {Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XI},
	publisher = {SPIE},
	year = {2014},
	series = {Proceedings of SPIE; V. 9191},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9191}
}