1. Energy-efficient buildings: multi-annual roadmap for the contractual PPP under horizon 2020;European Commission,2013
2. Energy technology perspectives 2012 – pathways to a clean energy system;IEA,2012
3. Waste heat recovery;DOE,2008
4. Thermal energy storage (TES) systems using heat from waste;Fernández,2014
5. Interviewee;Suez,2015