@book{114335,
	author = {RITGER, H. and VAN LAAR, M.},
	title = {EPIDEMIOLOGICAL ASPECTS OF CANNABIS USE. EN: CANNABIS 2002 REPORT. TECHNICAL REPORT OF THE INTERNATIONAL SCIENTIFIC CONFERENCE, BRUSSELS, BELGIUM, 25/2/2002},
	publisher = {TRIMBOS-INSTITUUT},
	year = {2002},
	address = {UTRECHT},
	url = {\\Srvdatos\siis\docus\Documentos Internet\Anteriores-2007\Cannabis 2002 report.pdf}
}