MA 24/7/14. Blue in Sherpa: Author's Pre-print: author cannot archive pre-print (ie pre-refereeing)
Author's Post-print: author cannot archive post-print (ie final draft post-refereeing)
Publisher's Version/PDF: author can archive publisher's version/PDF, 
Published version now CC-BY-NC-ND - added Lyn 8/12/2020
 Grant information added, LL 8/12/20