category c1 Refereed Journal Article HERDC/ERA 2008/2009 pt.18/9/10; Green in Sherpa - pre- and post-print ok to archive LV 29/11/10. email sent 26.05.11-MMM. author's reply: If it is already publicly available anyway, is it really worth all this trouble for a paper over 9 years old?. 07.06.11-MMM; no link to full text available pa.16/8/11