@article {Liu20091471,
	title = {Positioning localities based on spatial assertions},
	journal = {International Journal of Geographical Information Science},
	volume = {23},
	number = {11},
	year = {2009},
	note = {施引文献 22},
	pages = {1471-1501},
	doi = {10.1080/13658810802247114},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-70350757453\&partnerID=40\&md5=e3aa5ee57d915289a437dbb748d13f8b},
	author = {Y. Liu and Guo, Q.H. and Wieczorek, J. and Goodchild, M.F.}
}
