@book{31378,
	author = {Marker, Alexander, ed.},
	title = {Properties and Characteristics of Optical Glass II},
	publisher = {SPIE},
	year = {1990},
	series = {Proceedings of SPIE; V. 1327},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1327}
}