HD 25/2/16.  Sherpa Author's Pre-print:	green tick  author can archive pre-print (ie pre-refereeing)
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:	
Publisher's version/PDF may be used
Creative Commons Attribution License
Copy of License must accompany any deposit.  Published version - Full-text added 8/3/16 Lyn. -
“VU paid APC for this article”, 5.9.16 -- MMM