HD 5/11/18 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: 	

    Pre-print must be removed and replaced with a link to the published version
    Published source must be acknowledged
    On author's personal website or institutional website
    Publisher's version/PDF may be used, but no permissions found, LL 7/11/18