Long-distance connections in the Copper Age: New evidence from the Alpine Iceman's copper axe Artioli, Gilberto ; Angelini, Ivana ; Kaufmann, Günther ; Canovaro, Caterina ; Dal Sasso, Gregorio ; Villa, Igor Maria Abstract Publication: PLoS ONE Pub Date: July 2017 DOI: 10.1371/journal.pone.0179263 Bibcode: 2017PLoSO..1279263A