@ARTICLE{Kurpaska_Sławomir_Energy_2012, author={Kurpaska, Sławomir and Latała, Hubert}, number={No 1}, journal={Teka Commission of Motorization and Power Industry in Agriculture}, howpublished={online}, year={2012}, publisher={The Lublin Branch of the Polish Academy of Sciences}, title={Energy efficiency of ground heat exchangers co-operating with a compressor heat pump}, }