category c1 Refereed Journal Article, author initiated  pt.9/7/13 LL 23/9/13. Yellow in Sherpa: Author's Pre-print: green tick  author can archive pre-print (ie pre-refereeing)
Author's Post-print: subject to Restrictions below, author can archive post-print (ie final draft post-refereeing)
Restrictions:  18 months embargo 
Publisher's Version/PDF: author cannot archive publisher's version/PDF, 26.9.13-MMM  dup ID 23474 del 22/7/14. --
Full-text added to Dark upload for ERA2018, 15.18--MM