LL 22/10/13. 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: •18 months embargo
Publisher's Version/PDF: author cannot archive publisher's version/PDF, 23.10.13-MMM