@conference {Jing2006,
	title = {The semantic analysis about the spatial orientation expression of GIS in Chinese-case study of Beijing},
	booktitle = {Proceedings of SPIE - The International Society for Optical Engineering},
	volume = {6420},
	year = {2006},
	note = {施引文献 0},
	doi = {10.1117/12.712924},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33846813490\&partnerID=40\&md5=7127a905de0ed50d08ecb33cd789d568},
	author = {Jing, Z. and Yu, L. and Jiuhu, S. and Jie, Z.}
}
