id	domain	url
cet-699	www.aidic.it	www.aidic.it/cet
cet-699	www.sciencedirect.com	https://www.sciencedirect.com/science/article/pii/s2451910316300187#
cet-699	www.sciencedirect.com	https://www.sciencedirect.com/science/article/pii/s2451910316300187#
cet-699	www.sciencedirect.com	https://www.sciencedirect.com/science/article/pii/s2451910316300187#