Dear Gina May be also of interest? :) http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0121235 Greetings Alfred [image001] PD. Mag. Dr. Alfred Galik Austrian Archaeological Institute Head Office Vienna Franz Klein-Gasse 1 1190 Vienna, Austria T: +43 1 4277 27149 E: [log in to unmask]<mailto:[log in to unmask]> I: www.oeai.at<http://www.oeai.at/>