1. Kyoto Protocol to the United Nations Framework Convention on Climate Change;UNFCCC,1998
2. ScadPlus: Regeling voor de handel in broeikasgasemissierechten;Europese Unie,2004
3. EnergieNed;EnergieNed,2006
4. An Inquiry into the Nature and Causes of the Wealth of Nations;Smith,1776
5. Strategic aspects of CO2-emissions trading: Theoretical concepts and empirical findings;Ehrhart;Energy Environ.,2003