Yellow in Sherpa, author can archive pre-print (ie pre-refereeing) or subject to Restrictions below, author can archive post-print (ie final draft post-refereeing) Restrictions: If signed CTA, only allowed with written permission 0-24 months depending on journal. 29.5.12-MMM Metadata revised, added doi & set statement, LL 11/5/2020. -- Submission & Permission Form added to Dark Archive 13.8.2020-MMM