@misc{Ingarden_Roman_Stanisław_(1920-_)_The,
 author={Ingarden, Roman Stanisław (1920- )},
 copyright={Ingarden, Roman Stanisław},
 address={Warszawa},
 howpublished={online},
 publisher={PTF},
 language={eng},
 title={The density operator and information thermodynamics},
 type={nadbitka},
}