id	domain	url
issue-313	dx.doi.org	http://dx.doi.org/10.30525/2256-0742/2017-3-5-421-430
issue-313	www.worldsteel.org	www.worldsteel.org
issue-313	www.worldsteel.org	www.worldsteel.org
issue-313	www.worldsteel.org	https://www.worldsteel.org/en/dam/jcr:3e275c736f11-4e7f-a5d8-23d9bc5c508f/steel+statistical+yearbook+2017.pdf