@book{30130,
	author = {Herrmann, Reinhard, ed.},
	title = {Optical Thin Films and Applications},
	publisher = {SPIE},
	year = {1990},
	series = {Proceedings of SPIE; V. 1270},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1270}
}