@book{32935,
	author = {Watkins, Wendell, ed.},
	title = {Targets and Backgrounds XII: Characterization and Representation},
	publisher = {SPIE},
	year = {2006},
	series = {Proceedings of SPIE; V. 6239},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6239}
}