1. Theory of the ground pipe heat source for the heat pump;Ingersoll;Heat Pip Air Cond,1948
2. Analysis on steady-state temperature field around a vertical borehole in geothermal heat exchangers;Zeng;J Shandong Inst Archit Eng,2002
3. A model of finite-length linear heat-source for the vertical Embedded pipe of a ground-source heat pump;Zeng;J Eng Therm Energy & Power,2003
4. Conduction of heat in solids;Carslaw,1946
5. Thermal analysis of heat extraction boreholes;Eskilson,1987