@book{25325,
	author = {Kersten, Ralf, ed.},
	title = {Fiber Optic Sensors IV},
	publisher = {SPIE},
	year = {1990},
	series = {Proceedings of SPIE; V. 1267},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1267}
}