Nature.is articles: Kolefnislosunar reiknivél og kolefnisjöfnunarsjóðurinn Kolviður
Guðrún Arndís Tryggvadóttir „Kolefnislosunar reiknivél og kolefnisjöfnunarsjóðurinn Kolviður“, Náttúran.is: Jan. 11, 2015 URL: http://nature.is/d/2015/01/11/kolefnislosunarreiknivel-og-kolefnisjofnunarsjodur/ [Skoðað:May 24, 2019]
Carbon offset: Carbon Offset Fund 1
The Community: Ecological 51 Climate Change: Global Warming 8 Environment: Global 4 Transport: Aviation 1 Pollution: Air pollution 8 Environment: Pollution 4 Carbon offset: Carbon offset companies 1