@misc{Rusak_Tomasz_J._Grzejnik,
 author={Rusak, Tomasz J.},
 howpublished={online},
 publisher={Rusak, Tomasz J.},
 language={pol},
 language={eng},
 title={Grzejnik i termostat = Heater and thermostat},
 type={e-książka},
 keywords={ogrzewanie},
}