1. A Resource-Efficient Europe-Flagship Initiative Under the Europe 2020 Strategy 2011 th http://ec.europa.eu/resource-efficient-europe/pdf/resource_efficient_europe_en.pdf
2. European Chemistry for Growth. Unlocking a Competitive, Low Carbon and Energy Efficient Future 2013 th http://www.cefic.org/Documents/PolicyCentre/Energy-Roadmap-The%20Report-European-chemistry-for-growth.pdf
3. 2013 th http://www.spire2030.eu/uploads/Modules/Documents/spire-roadmap_broch_july2013_pbp.pdf