id	domain	url
amq-141	amq.aiqua.it	http://amq.aiqua.it
amq-141	doi.org	https://doi.org/10.26382/amq.2018.18
amq-141	en.wikipedia.org	https://en.wikipedia.org/wiki/space_heating
amq-141	en.wikipedia.org	https://en.wikipedia.org/wiki/water_heating
amq-141	tonto.eia.doe.gov	http://tonto.eia.doe.gov/ftproot