id	domain	url
issue-294	dx.doi.org	http://dx.doi.org/10.30525/2256-0742/2017-3-5-268-275
issue-294	www.oup.com	www.oup.com/academic/pdf/13
issue-294	www.sophus.at.ua	http://www.sophus.at.ua/publ/...paradigma.../40-1-0-773
issue-294	www.un.org	http://www.un.org/es/comun
issue-294	www.issai.org	http://www.issai.org/media/12901/issai_1_e.pdf