@article {Liu2005283,
	title = {On internal cardinal direction relations},
	journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
	volume = {3693 LNCS},
	year = {2005},
	note = {施引文献 22},
	pages = {283-299},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33646155966\&partnerID=40\&md5=63ea7b4373a3dbb10db01b86be2e4e28},
	author = {Y. Liu and X. Wang and Jin, X. and L. Wu}
}
