LL 12/9/16  -- 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 General Conditions: Creative Commons Attribution No-Derivative Works License Published source must be acknowledged Publisher's version/PDF may be used. -- Full-text added 7.7.17-MMM