Green in Sherpa: author can archive pre-print (ie pre-refereeing)
Author's Post-print: 	author can archive post-print (ie final draft post-refereeing)
Publisher's Version/PDF: author can archive publisher's version/PDF, requested (Yang) Permission 19.5.14-MMM, file loaded while waiting for permission 4.7.14-MMM. File released 30.8.16--MMM