category c1 Refereed Journal Article, Gary Fryer signed VUIR pt.7/12/11. Author can archive pre-print (ie pre-refereeing)or post-print (ie final draft post-refereeing), e-mail sent to author 1.3.12-MMM. Supporting documentation added to dark upload - HD 10/11/17. HERDC documentation added to dark upload - HD 3/7/20