Author initiated. Green in Sherpa; Author's Pre-print:  author can archive pre-print (ie pre-refereeing)
Author's Post-print: author can archive post-print (ie final draft post-refereeing)  Publisher's Version/PDF: author cannot archive publisher's version/PDF  --MA 13/2/14. Requested (Scarpaci) Accepted version & Permission, 21.2.14-MMM