1. Heat Conduction with Engineering, Geological, and other Applications;Ingersoll,1954
2. Conduction of Heat in Solids;Carslaw,1947
3. P. Eskilson, Thermal Analysis of Heat Extraction Boreholes. Ph.D. Thesis, Lund University of Technology, Sweden, 1987.
4. A short time step response factor model for vertical ground loop heat exchangers;Yavuzturk;ASHRAE Transactions,1999
5. A multiple load aggregation algorithm for annual hourly simulations of GCHP systems;Bernier;International Journal of Heating, Ventilating, Air-Conditioning and Refrigeration Research,2004