category c1 Refereed Journal Article pt.15/6/12, author - John Tippett signed VUIR, author - Anona Armstrong signed VUIR pt.15/6/12, LL 3.9.12. Verified, 12.9.12-MMM. Not ins Sherpa 29.8.14-MMM. HERDC documentation added to dark upload - HD 19/5/20