@article {Liu2008623,
	title = {Towards a General Field model and its order in GIS},
	journal = {International Journal of Geographical Information Science},
	volume = {22},
	number = {6},
	year = {2008},
	note = {施引文献 20},
	pages = {623-643},
	doi = {10.1080/13658810701587727},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-42649093499\&partnerID=40\&md5=8bea75b4976e66aba87f4931b5c8a4a2},
	author = {Y. Liu and Goodchild, M.F. and Guo, Q. and Y. Tian and L. Wu}
}
