1. Theory of the ground pipe heat source for the heat pump;Ingersoll;ASHVE Trans.,1948
2. Heat Conduction With Engineering, Geological and Other Application;Ingersoll,1948
3. Simulation of vertical U-tube ground-coupled heat pump systems using a cylindrical heat source solutions;Deerman;ASHRAE Trans.,1991
4. Determining effective soil formation thermal properties from field data using a parameter estimation technique;Shonder;ASHRAE Trans.,1999
5. Modeling of vertical ground loop heat exchanger for ground source heat pump systems;Yavuzturk,1999