Author initiated. MA 3/10/13. Added Refereed, White 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:   subject to Restrictions below, author can archive publisher's version/PDF 
Restrictions: •Permission must be obtained from the publisher
•Author must complete and submit publisher's Fair Use form, 18.12.13-MMM