@book{31179,
	author = {Tan, Honghua, ed.},
	title = {PIAGENG 2009: Remote Sensing and Geoscience for Agricultural Engineering},
	publisher = {SPIE},
	year = {2009},
	series = {Proceedings of SPIE; V. 7491},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7491}
}