LL 30.8.13.  Author initiated, Yellow in Sherpa: Author's Pre-print: author can archive pre-print (ie pre-refereeing)
Author's Post-print: subject to Restrictions below, author can archive post-print (ie final draft post-refereeing)
Restrictions: If signed CTA, only allowed with written permission
    0 to 24 months depending on journal and funding agency requirements
Publisher's Version/PDF: author cannot archive publisher's version/PDF, 30.8.13-M