Author initiated. Not published, in press, should be online first article. Not checked in Sherpa -C.Lopez's page consulted for keywords --MA 9/4/14. Now published, online first, added other keyword, abstract, doi, urls, refereed, 9.7.14-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 (Tim) Accepted v. & Permission, 31.7.14-MMM. Both received 7.8.14-MMM. Supporting documentation added to dark upload  - HD 25/10/17  Changed URL link - added full-text added to Dark Repository for ERA - MA 28/2/18