1. Trnsys 17 a transient SYSTEM Simulation Software tool. Solar Energy Laboratory Univ. of Wisconsin‐Madison; TRANSSOLAR Energie technik GmbH; CSTB –Centre Scientifique et Technique du Bâtiment; TESS – Thermal Energy Systems Specialists.
2. Evaluation of diffuse solar radiation models in Northern China: New model establishment and radiation sources comparison
3. The world Business Council for Sustainable Development. WBCSD transforming the market: energy efficiency in buildings survey report. The world Business Council for Sustainable Development April 2009.
4. US energy conservation and efficiency policies: challenges and opportunities;Dixon R;Energy Policy,2010
5. International Energy Agency. International Organization for Standardisation (IEA‐ISO). International standards to develop and promote energy efficiency and renewable energy sources. In:Special ISO Focus‐World Energy Congress Genève Switzerland: ISO Central Secretariat (International Organization for Standardization)2007 5–10.