Bron: IPTS, DG Gemeenschappelijk Centrum voor Onderzoek, "Preliminary Analysis of the Implementation of an EU-Wide Permit System on CO2 Emissions Abatement Costs Results from Poles model" (te verschijnen).
Quelle: IPTS, GD Gemeinsame Forschungsstelle, "Preliminary Analysis of the Implementation of an EU-Wide Permit System on CO2 Emissions Abatement Costs Results from Poles model" (erscheint demnächst).