@article {Liu200881,
	title = {Probabilistic composition of cone-based cardinal direction relations},
	journal = {Science in China, Series E: Technological Sciences},
	volume = {51},
	number = {SUPPL. 1},
	year = {2008},
	note = {施引文献 3},
	pages = {81-90},
	doi = {10.1007/s11431-008-5007-4},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-44949250143\&partnerID=40\&md5=ae223adccb5e747dbd2e190ce50883c1},
	author = {Y. Liu and Y. Tian and Weng, J.}
}
