id	domain	url
ssh-3645	doi.org	https://doi.org/10.2307/2618838
ssh-3645	doi.org	https://doi.org/10.30541/v58i1pp.65-81
ssh-3645	www.bp.com	https://www.bp.com/en/global/corporate/energyeconomics/statistical-review-of-world-energy/primary-energy.html
ssh-3645	www.opec.org	https://www.opec.org/opec_web/en/data_graphs/330.htm
ssh-3645	www.iea.org	https://www.iea.org/data-andstatistics/charts/world-oil-supply-and-demand-1971-2020