@techreport { 2004,
	title = {Report of International Workshop on Spatial Data Infrastructures’Cost-Benefit / Return onInvestment},
	number = {EUR 22294 },
	year = {2006},
	note = {Quantitative},
	pages = {57},
	institution = {Joint Research Centre},
	type = {Report},
	address = {Ispra},
	URL = {http://www.ec-gis.org/sdi/ws/costbenefit2006/reports.cfm},
	author = {European Commission}
}