19.1.16-MMM. --
Blue in Sherpa: Author's Pre-print: 	cross  author cannot 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: 	

    On author's personal website, departmental website or institutional repository
    On open access repository at discretion of publisher
    Published source must be acknowledged
    Publisher's version/PDF may be used
    Creative Commons Attribution License 3.0. --
Full-text added 21.8.17-MMM