c1 Refereed Journal Article. MA 18/7/14. Green in Sherpa: thor'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 can archive publisher's version/PDF.
Author no longer at VU 22.9.14-MMM