HD 16/8/16 Green in Sherpa. Paid OA: 	A paid open access option is available for this journal. 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) ; author cannot archive publisher's version/PDF ; Published source must be acknowledged ;    Publisher's version/PDF cannot be used Publisher version added to dark upload for ERA LL 28/2/18