c1 Refereed Journal Article. 22/7/14 HD. 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 
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Nicoleta no longer at VU 17.9.14-MMM