@book{25732,
	author = {Garmire, Elsa, ed.},
	title = {Guided Wave Optical Systems and Devices I},
	publisher = {SPIE},
	year = {1978},
	series = {Proceedings of SPIE; V. 0139},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/0139}
}