1. Swedish Energy Agency. Energiläget i siffror 2005, Facts and Figures, ET 2005:24, STEM, Eskilstuna, 2005.
2. Driving forces and obstacles with regard to co‐operation between municipal energy companies and process industries in Sweden;Grönkvist;Energy Policy,2006
3. Case study: the role of a paper mill in a merged district heating system;Gebremedhin;Applied Thermal Engineering,2003
4. Grossmann IE, Caballero JA, Yeomans H. Advances in mathematical programming for automated design: integration and operation of chemical processes. Proceedings of the International Conference on Process Integration, Copenhagen, Denmark, 1999.