Harbours and maritime networks as complex adaptive systems : international workshop "Harbours and maritime Networks as Complex Adaptive Systems" at the Römisch-Germanisches Zentralmuseum in Mainz, 17.-18.10.2013, within the framework of the Special Research Programme (DFG-SPP 1630) "Harbours from the Roman Period to the Middle Ages" - Preiser-Kapeller, Johannes; Daim, Falko, 1953- (Römisch-Germanisches Zentralmuseum, 2015)