@book{31128,
	author = {Potter, Roy, ed.},
	title = {Physical Properties of Optical Materials},
	publisher = {SPIE},
	year = {1980},
	series = {Proceedings of SPIE; V. 0204},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/0204}
}