c1 Refereed Journal Article LL 13.3.14. Yellow in Sherpa: Pre-print: author can archive pre-print (ie pre-refereeing) Author's Post-print: subject to Restrictions below, author can archive post-print (ie final draft post-refereeing) Restrictions: •6 months embargo Publisher's Version/PDF: author cannot archive publisher's version/PDF General Conditions: •Authors retain copyright •Published source must be acknowledged and DOI cited •Must link to publisher version •Publisher's version/PDF cannot be used •On author's personal website and institutional repository.. Requested (Michael) Accepted v & permission 24.9.14-MMM