1. Advanced engineering thermodynamics;Bejan,1998
2. Bring A, Sahlin P, Vuolle M. Models for building indoor climate and energy simulation. Report of IEA SHC Task 22, Subtask B (1999).
3. DIN 4108-6: 2003–06. Wärmeschutz und Energie-Einsparung in Gebäuden – Teil 6: Berechnung des Jahresheizwärme- und des Jahresheizenergiebedarfs. German National Standard. Berlin: Deutsches Institut für Normung e.V.
4. Exergy as a driver for achieving sustainability;Dincer;International Journal of Green Energy,2004
5. Energy and exergy analysis of a ground coupled heat pump with two horizontal ground heat exchangers;Hikmet;International Journal of Building and Environment,2007