1. Green-X project, Deriving optimal promotion strategies for increasing the share of RES-E in a dynamic European electricity market, Fifth Framework Programme of the European Commission, website www.green-x.at.
2. Green-Net project, Pushing a least cost integration of green electricity into the European grid, Fifth Framework Programme of the European Commission, website www.greennet.at.
3. Calculation of building heating demand in EPIQR;Wittchen;Energy & Buildings,2000
4. INVESTIMMO Project, A decision-making tool for long-term efficient investment strategies in housing maintenance and refurbishment, Competitive and Sustainable Growth Programme of European Commission, website http://www.investimmo.cstb.fr/.
5. Energy management in public buildings of European islands. The case of Crete;Kteniadis,1998