@book{33501,
	author = {Gerhart, Grant, ed.},
	title = {Unmanned Systems Technology XI},
	publisher = {SPIE},
	year = {2009},
	series = {Proceedings of SPIE; V. 7332},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7332}
}