"One of the main methods for the implementation of sustainable development at the firm level is the application of environmental management systems (EMSs), voluntary tools adopted by organisations in order to continuously improve their environmental performance. Since the late nineties the implementation and application of EMSs to clusters of organisations became an increasingly interesting topic both at the EU and national level. Productive clusters have since been identified as the optimal testing ground for the implementation of environmental voluntary tools for the shared management of environmental issues by the local stakeholders.. The starting point of the local approach to EMSs has started with the enactment of the second version of...