1. Passive House Institut, Quality Approved Passive House Certification-Criteria for Residential Passive Houses, Darmstadt, Germany, 2011 (available at www.passiv.de, 2013).
2. D.S. Parker, Very Low Energy Homes in the United States: Perspectives on Performance from Measured Data, FSEC-RR-302-08, http://www.fsec.ucf.edu/en/publications/pdf/FSEC-RR-302-08.pdf, Florida, USA, 2008.
3. Fraunhofer Institute for Solar Energy Systems ISE, The Solar House in Freiburg: From a self-sufficient solar house to a research platform, Freiburg, August 2000.
4. Designing carbon neutral plus-energy-buildings with site adaptive heliotropism cycles;Spiegelhalter,2012
5. Zero energy buildings—a critical look at the definition;Torcellini,2006