id	domain	url
cet-5300	www.aidic.it	www.aidic.it/cet
cet-5300	www.sisweb.com	http://www.sisweb.com/index/referenc/tenaxtam.htm
cet-5300	www.estcal.com	http://www.estcal.com/tech_papers/papers/generalanalysis/acs2000c.pdf