Blue in Sherpa: Author's Pre-print: author cannot archive pre-print (ie pre-refereeing) Author's Post-print: author cannot archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: author can archive publisher's version/PDF General Conditions: On Institutional Repositories Publisher's version/PDF must be used (provided) On a non-profit server Publisher copyright and source must be acknowledged, 10. 8. 16--MMM