1. Federal Network Agency Germany: Monitoring Report 2015, Bonn, Germany, 2015.
2. Federal Network Agency Germany: Smart Grid and Smart Market, position paper, Bonn, Germany, 2011.
3. Federal Association of the German Energy and Water Industry (BDEW), Smart Grids: the interaction between Market and Grid, discussion paper, Berlin, Germany, 2012.
4. ETG Energy Technology Society within VDE, Regional flexibility markets, Study, Frankfurt, Germany, 2014.
5. Association of Energy Market Innovators (BNE), The flex market - basic points for the design of a competitive framework for flexibility on the demand side, position paper, Berlin, Germany, 2014.