@book{25685,
	author = {Suleski, Thomas, ed.},
	title = {Gradient Index, Miniature, and Diffractive Optical Systems II},
	publisher = {SPIE},
	year = {2001},
	series = {Proceedings of SPIE; V. 4437},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/4437}
}