@book{32929,
	author = {Watkins, Wendell, ed.},
	title = {Targets and Backgrounds IX: Characterization and Representation},
	publisher = {SPIE},
	year = {2003},
	series = {Proceedings of SPIE; V. 5075},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/5075}
}