@book{24846,
	author = {Barnes, William, ed.},
	title = {Earth Observing Systems II},
	publisher = {SPIE},
	year = {1997},
	series = {Proceedings of SPIE; V. 3117},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/3117}
}