@book{23750,
	author = {Williams, Thomas, ed.},
	title = {Assessment of Imaging Systems I},
	publisher = {SPIE},
	year = {1977},
	series = {Proceedings of SPIE; V. 0098},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/0098}
}