1. Entsoe, European Network of Transmission System Operators for Electricity Research and Development Plan - European Grid Towards 2020 2010 https://www.entsoe.eu/…/100331_ENTSOE_R_D_Plan_FINAL.pdf
2. European Commission European SmartGrids Technology Platform 2006 ec.europa.eu/research/energy/pdf/smartgrids_en.pdf
3. European Commission Strategic Energy Technologies Information Systems A Technology Roadmap for the Communication on Investment\ in the Development of Low Carbon Technologies 2009 http://setis.ec.europa.eu/about-setis/technology-roadmap/Complete%20report.pdf/view