[1] Open License Expression Working Group Charter (DRAFT) ( 版) http://w3c.github.io/ole/charter.html
[2] Open License Expression Working Group Charter in Development (Advance Notice) (Coralie Mercier 著, 版) https://lists.w3.org/Archives/Public/public-new-work/2015Aug/0003.html
[3] ODRL Community Group ( 版) https://www.w3.org/community/odrl/