@ARTICLE{Szreder_Mariusz_Investigations_2013,
 author={Szreder, Mariusz},
 number={No 1},
 journal={Teka Commission of Motorization and Power Industry in Agriculture},
 howpublished={online},
 year={2013},
 publisher={The Lublin Branch of the Polish Academy of Sciences},
 title={Investigations into the influence of functional parameters of a heat pump on its thermal efficiency},
}