Yellow in Sherpa: author can archive pre-print (ie pre-refereeing), 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, 31.5.12-MMM Metadata revised, queried availability, added doi, LL 11/5/2020. This is AAM (see written permission) LL 18/5/2020. -- Submission & Permission Form added to Dark Archive 22.10.20-MMM.