1. Fredriksen, S., Werner, S.: District Heating and Cooling, 1st ed. Studentlitteratur AB, Lund (2013)
2. Berge, A., Adl-Zarrabi, B., Hagentoft, C.-E.: Assessing the thermal performance of district heating twin pipes with vacuum insulation panels. Energy Procedia 78, 382–387 (2015)
3. Kręcielewska, E., Menard, D.: Thermal conductivity coefficient of PUR insulation material from pre-insulated pipes after real operation on district heating networks and after artificial ageing process in heat chamber. In Proceedings of the 14th International Symposium on District Heating and Cooling, Sweden, Stockholm (2014)
4. Powerpipe.: Product catalog (2018)
5. Persson, C.: Predicting the Long-Term Insulation Performance of District Heating Pipes. Dissertation, Chalmers University of Technology, Gothenburg (2015)