@book{29915,
	author = {Caulfield, H. John, ed.},
	title = {Optical Pattern Recognition II},
	publisher = {SPIE},
	year = {1989},
	series = {Proceedings of SPIE; V. 1134},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1134}
}