id	domain	url
essd-280	www.press.ierek.com	http://www.press.ierek.com
essd-280	creativecommons.org	https://creativecommons.org/licenses/by/4.0/)
essd-280	creativecommons.org	https://creativecommons.org/licenses/by/4.0
essd-280	crossmark.crossref.org	https://crossmark.crossref.org/dialog/?doi=10.21625/essd.v3iss1.280&domain=press.ierek.com
essd-280	www.norsys.com	http://www.norsys.com/netica.html
essd-280	www.ventanasystems.co.uk	http://www.ventanasystems.co.uk/vensim-6-1-releas