@misc{Smyczek_Jerzy._Teoria,
 author={Smyczek, Jerzy.},
 copyright={Smyczek, Jerzy.},
 howpublished={online},
 publisher={Technical University of Lodz Publisher},
 language={pol},
 type={book},
 type={language document},
 type={TUL textbook},
 title={Teoria sygnałów i informacji. Cz. 1},
}