@book{31742,
	author = {Ehlers, Manfred, ed.},
	title = {Remote Sensing for Environmental Monitoring, GIS Applications, and Geology III},
	publisher = {SPIE},
	year = {2004},
	series = {Proceedings of SPIE; V. 5239},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/5239}
}