1. S. Frederiksen, S. Werner, District Heating and Cooling, Studentlitteratur AB, Lund, 2013.
2. 4th Generation District Heating (4GDH): Integrating smart thermal grids into future sustainable energy systems;Lund;Energy,2014
3. Heat Roadmap Europe: Combining district heating with heat savings to decarbonise the EU energy system;Connolly;Energy Policy,2014
4. D. Connolly, B.V. Mathiesen, P. Alberg Østergaard, B. Möller, S. Nielsen, H. Lund, U. Persson, D. Nilsson, S. Werner, D. Trier, Heat Roadmap Europe 2050 - First pre-study for the EU 27, in, 4DH, Aalborg University and Halmstad University, 2012.
5. United Nations Environment Programme, District Energy In Cities - Unlocking the Potential of Energy Efficiency and Renewable Energy, in, 2015.