@book{26267,
	author = {Mitchell, Brian, ed.},
	title = {Image Understanding in the '90s: Building Systems that Work},
	publisher = {SPIE},
	year = {1991  },
	series = {Proceedings of SPIE; V. 1406},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1406}
}