c1 Refereed Journal Article
abstract in pdf copyright. Yellow in Sherpa. TPP 29/10/2013.
Yellow in Sherpa: Author's 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: 12 months embargo
Publisher's Version/PDF: author cannot archive publisher's version/PDF,
Requested (McKenna) Accepted version & Permission, 25.3.14-MMM. Received full-text only, requested permission again, 31.3.14-MMM, Signed permission received - via executive assistant (Amanda), permission indicates the material has not been through formal peer review...& signed by Prof. McKenna, 1.4.14-MMM. Supporting documentation added to dark upload - HD 20/4/18