TPP 12/6/2013. Verified 28.6.13-MMM.  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, requested (Julie) post-print & permission, 27.8.13-MMM.  Julie has signed permission but does not have post-print version, 24.9.13-MMM. Supporting documentation added to dark upload - HD 13/6/18