@book{31096,
	author = {Andrews, Mark, ed.},
	title = {Photosensitive Optical Materials and Devices},
	publisher = {SPIE},
	year = {1997},
	series = {Proceedings of SPIE; V. 2998},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2998}
}