id	domain	url
fueconorg-3451	doi.org	https://doi.org/10.22190/fueo1802177t
fueconorg-3451	arxiv.org	https://arxiv.org/pdf/cond-mat/0307341v2.pdf
fueconorg-3451	unstats.un.org	http://unstats.un.org/unsd/snaama/dnltransfer.asp?fid=2