@ARTICLE{Sarniak_Mariusz_Research_2013,
 author={Sarniak, 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={Research into the energy balance of a standalone photovoltaic tracking system},
}