category c1 Refereed Journal Article HERDC/ERA 2008/2009 pt.18/9/10; Blue in Sherpa - only post-print ok to archive; publisher version archiving subject to: In institutional archive/repository only, Publisher copyright and source must be acknowledged, 4 year embargo for use of publishers version, Can post in subject repository after 4 year embargo If author pays up-front publication fee, embargo is waived for use of publisher version LV 21/12/10