LL 30/3/17. --
Green in 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: 	

    On any website
    Creative Commons Attribution License 2.0
    Publisher copyright and source must be acknowledged
    Must link to publisher version
    Publisher's version/PDF may be used. -
Publisher's v. full-text added, 5.4.17--MMM