@inproceedings{KulikEschenbachEtal02,
	address = {Berlin},
	author = {L. Kulik and C. Eschenbach and C. Habel and H. R. Schmidtke},
	booktitle = {Geographic Information Science: Second International Conference},
	Date-Added = {2009-10-28 09:58:24 +0100},
	Date-Modified = {2009-10-28 11:33:24 +0100},
	editor = {M.J. Egenhofer and D.M. Mark},
	ibrauthors = {hschmi},
	ibrgroups = {dus},
	pages = {119--131},
	url = {http://www.springerlink.com/content/yqm2e4k6bfy8nqr8/fulltext.url},
	publisher = {Springer},
	series = {LNCS},
	title = {A graded approach to directions between extended objects},
	volume = {2478},
	year = {2002}}