OA article - HD 12/8/16. -
Blue in Sherpa: Author's Pre-print: 	question mark  archiving status unclear
Author's Post-print: 	green tick  author can archive post-print (ie final draft post-refereeing)
Publisher's Version/PDF: 	green tick  author can archive publisher's version/PDF
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    Publisher's version/PDF may be used, -
16.8.16--MMM