1. Ground-Source Heat Pumps: Design of Geothermal Systems for Commercial and Institutional Buildings;Kavanaugh,1997
2. A design method for hybrid ground-source heat pumps;Kavanaugh;ASHRAE Transactions,1998
3. C. Yavuzturk, Modeling of Vertical Ground Loop Heat Exchangers for Ground Source Heat Pump Systems, Doctoral Thesis, Oklahoma State University, 1999.
4. Optimal sizing of hybrid ground-source heat pump systems that use a cooling pond as a supplemental heat rejecter – a system simulation approach;Ramamoorthy;ASHRAE Transactions,2001
5. K.F. Lau, M.T. Suen, Geothermal heat pump air-conditioning system for the Hong Kong International Wetland Park, in: Proceedings of Shandong-Hong Kong Joint Symposium 2003, pp. A1–A9.