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- InCommon Federation site regarding the Categorization of attributes
- The Finnish attribute profile (in Finnish but English option available of the portal front page): http://www.suomi.fi/suomifi/tyohuone/yhteiset_palvelut/verkkotunnistaminen_ja_-maksaminen_vetuma/tekninen_rajapinta/finnish_attribute_profile/FinnishAttributeProfile20110221.pdf
- UK government Data standards http://interim.cabinetoffice.gov.uk/govtalk/schemasstandards/e-gif/datastandards.aspx
- An emerging effort is the ISOC initiative 'Moving forward with an Internet Attribute Infrastructure', that spawned from the main gap identified in the 2011 workshop 'Mapping the Identity Ecosystem' ( http://tid.isoc.org/trac/ideco )
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