c1 Refereed Journal Article.
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 
TPP 24/7/2014
Requested (Christopher) Accepted v. & Permission 28.8.14-MMM