1. Congedo P.M., Colangelo G., Starace G. (2012). CFD simulations of horizontal ground heat exchangers: A comparison among different configurations. Applied Thermal Engineering, p. 33-34, p. 24-32.
2. Florides G., Kalogirou S. (2007). Ground heat exchangers - a review of systems, models and applications. Renewable Energy, 32, p. 2461- 2478.
3. Huang B. J., Lee C. P. (2004). Long-term performance of solar-assisted heat pump water heater. Renewable Energy, 29(4), p. 633-639.
4. Kim D.S., Morertti I., Hubert H., Monsberger M. (2011). Heat exchangers and the performance of heat pumps- analysis of a heat pump database. Applied Thermal Engineering, 31(5), p. 911-920.
5. Kurpaska S. (2008). Constructional and operational guidelines for systems using a heat pump to heat horticultural objects (in Polish), Inżynieria Rolnicza, 2 (100), p. 155-162.
6. Lee C.K., Lam H.N. (2008). Computer simulation of borehole ground heat exchangers for geothermal heat pump systems. Renewable Energy, 33(6), p. 1286-1296.
7. Ozgener O., Hepbasli A. (2005a). Exergoeconomic analysis of a solar assisted ground-source heat pump greenhouse heating system. Applied Thermal Engineering, 25(10), p. 1459-1471.
8. Ozgener O., Hepbasli A. (2005b). Experimental performance analysis of solar assisted ground-source heat pump greenhouse heating system. Energy and Buildings, 37(1), p. 101-110.
9. Ozgener O., Hepbasli A. (2005c). Performance analysis of a solar-assisted ground-source heat pump system for greenhouse heating: an experimental study. Building and Environment, 40(8), p. 1040-1050.
10. Partenay V., Riederer P., Salque T., Wurtz E. (2011). The influence of the borehole short-time response on ground source heat pump system efficiency. Energy and Buildings, 43, p. 1280-1287.
11. PN EN 255-1: (2000) Air conditioners, liquid chilling packages and heat pumps compressors, will be driving electric - heating function - Terms, definitions and symbols.
12. Trillat-Berdal V., Souyri B., Fraisse G. (2006). Experimental study of a ground-coupled heat pump combined with thermal solar collectors. Energy and Buildings 38, p. 1477-1484.
13. Wood Ch.J., Liu H., Riffat S.B. (2010). An investigation of the heat pump performance and ground temperature of a piled heat Exchange system for a residual building. Energy, 35(12), p. 4932-4940.
14. Yang H., Cui P., Fang Z. (2010). Vertical-borehole ground-coupled heat pumps: A review of models and systems. Applied Energy, 87(1), p. 16-27.