@ARTICLE {
	AUTHOR = "Benjamin Bustos and Tomas Skopal",
	TITLE ="Beyond the Metric Space Model",
	JOURNAL = "SIGSPATIAL Special",
	VOLUME = "2",
	NUMBER = "2",
	PAGES = "20-23",
	MONTH = "Jul",
	YEAR = "2010",
	PUBLISHER = "ACM Press",
	ADDRESS = "New York, NY, USA",
	ISSN = "1946-7729"
	NOTE = "Invited paper",
	}