Author initiated. Green in Sherpa; Author's Pre-print:  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 cannot archive publisher's version/PDF  -MA 8/1/14. added refereed, requested (Betik) Accepted version & permission, 21.1.14-MMM