@book{5833,
	author = {Korf, Dirk J. and Riper, Heleen and EUROPEAN MONITORING CENTRE FOR DRUGS AND DRUG ADDICTION - EMCDDA},
	title = {Outreach work among drug users in Europe},
	publisher = {Office for Official Publications of the European Communities},
	year = {1999},
	series = {EMCDDA Insights Series},
	address = {Luxembourg}
}